[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s





[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s





[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l● Thinking · 0.1s





[?25h[?2026l[?2026h[?25l● Thinking · 0.2s





[?25h[?2026l[?2026h[?25l● Thinking · 0.3s





[?25h[?2026l[?2026h[?25l● Thinking · 0.4s





[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe failur









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● Writing · 0.2s





[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25lThe failure point is in `S









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❯ c

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









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● Writing · 0.3s



❯ ch

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ chec

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









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❯ check

[?25h[?2026l[?2026h[?25l



● Writing · 0.4s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check 

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❯ check t

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not retried on 









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● Writing · 0.5s



❯ check th

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not retried on transien









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❯ check the

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not retried on transient `EAGAI









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❯ check the 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









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● Writing · 0.6s



❯ check the s

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









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❯ check the se

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









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❯ check the ses

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









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● Writing · 0.7s



❯ check the sess

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the sess

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❯ check the sessi

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event and the









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❯ check the sessio

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event and the session









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● Writing · 0.8s



❯ check the session

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event and the session log div









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❯ check the session 

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ check the session s

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event and the session log diverges from what 



● Writing · 0.9s





[?25h[?2026l[?2026h[?25l











❯ check the session st

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check the session sto

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the session sto

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❯ check the session stor

[?25h[?2026l[?2026h[?25l





screen. 



● Writing · 1.0s





[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ check the session store 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ check the session store r

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l













❯ check the session store re

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check the session store ret

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check the session store retr

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ check the session store retry log

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ check the session store retry logic a

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❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the session store retry logic an

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❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the session store retry logic and

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❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append`



● Writing · 1.6s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l- `append` now ret









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❯ re

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ rerun t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun t

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❯ rerun th

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- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





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❯ rerun the 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









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❯ rerun the t

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the test

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❯ rerun the tests

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- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests 

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- a `WriteFailed` 







❯ rerun the tests t

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- a `WriteFailed` event is







❯ rerun the tests th

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● Writing · 2.2s





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- a `WriteFailed` event is emitted







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 



● Writing · 2.3s





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- a `WriteFailed` event is emitted only after the final at









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❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tests then ve

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❯ rerun the tests then ver

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- no parti



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- no partial frame







❯ rerun the tests then veri

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- no partial frames are ev







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l









● Writing · 2.5s





[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests then verify t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then verify th

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async appe



● Writing · 2.6s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

async append(event







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):



● Writing · 2.7s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the tests then verify the jour

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



  for (let atte









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❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;



● Writing · 2.9s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt



● Writing · 2.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ c

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)







❯ ch

[?25h[?2026l[?2026h[?25l







● Writing · 3.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ che

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ chec

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❯ check

[?25h[?2026l[?2026h[?25l







      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l















❯ check 

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ check t

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









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❯ check th

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event







❯ check the

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the 

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❯ check the s

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l



















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the se

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    } catch (e







❯ check the ses

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check the ses

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❯ check the sess

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l













      if (







❯ check the sessi

[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ check the sessio

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s



❯ check the session

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw







❯ check the session 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the session s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ check the session st

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      await delay(







❯ check the session sto

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 







❯ check the session stor

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the session store

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ check the session store 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the session store re

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[?25h[?2026l[?2026h[?25l





























❯ check the session store ret

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ check the session store retr

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ check the session store retry

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ check the session store retry l

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session store retry lo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr



● Editing src/context/engine.ts · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ r

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l









❯ re

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s



❯ rer

[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ reru

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 







❯ rerun

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s



❯ rerun 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve







❯ rerun t

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ rerun th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



frame that the







❯ rerun the 

[?25h[?2026l[?2026h[?25l











❯ rerun the t

[?25h[?2026l[?2026h[?25l



frame that the journal



● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l











❯ rerun the te

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ rerun the tes

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ rerun the test

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





because 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ rerun the tests the

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started —







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l







never started — the journal eit







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started — the journal either has 







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 1.2s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25lTwo details worth ca









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lTwo details worth calling ou



● Editing src/context/engine.ts · 1.4s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.4s



❯ rerun the tests then verify the journ

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❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l1. `isTra



● Editing src/context/engine.ts · 1.5s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ ch

[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ chec

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 







❯ check

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl







❯ check 

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.8s





[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

2. the backoff







❯ check th

[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ check the

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu







❯ check the 

[?25h[?2026l[?2026h[?25l









❯ check the s

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas







❯ check the se

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,







❯ check the ses

[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ check the sessi

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the sessi

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● Editing src/context/engine.ts · 2.1s



❯ check the sessio

[?25h[?2026l[?2026h[?25l



   the 100 m









[?25h[?2026l[?2026h[?25l











❯ check the session

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ check the session 

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e







❯ check the session s

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu







❯ check the session st

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the session sto

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● Editing src/context/engine.ts · 2.3s





[?25h[?2026l[?2026h[?25lWith this in







❯ check the session stor

[?25h[?2026l[?2026h[?25l







❯ check the session store

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ check the session store 

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s





[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.







❯ check the session store r

[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session store ret

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❯ check the session store retr

[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

reproducing under



● Editing src/context/engine.ts · 2.6s





[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, a







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.7s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays









[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the session store retry logic 

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● Editing src/context/engine.ts · 2.8s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l



loop bud









[?25h[?2026l[?2026h[?25l



loop budget. The







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



loop budget. The remaini







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to su



● Editing src/context/engine.ts · 2.9s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ re

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail







❯ rer

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rer

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❯ reru

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the statu









[?25h[?2026l[?2026h[?25l













❯ rerun

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l





the status bar so







❯ rerun 

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ rerun t

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ rerun th

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible







❯ rerun the

[?25h[?2026l[?2026h[?25l













❯ rerun the 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ rerun the t

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 



● Editing src/context/engine.ts · 3.3s





[?25h[?2026l[?2026h[?25l













❯ rerun the te

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tes

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❯ rerun the test

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❯ rerun the tests

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❯ rerun the tests t

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❯ rerun the tests th

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❯ rerun the tests the

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❯ rerun the tests then

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❯ rerun the tests then 

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❯ rerun the tests then v

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❯ rerun the tests then ve

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❯ rerun the tests then ver

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❯ rerun the tests then veri

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❯ rerun the tests then verif

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❯ rerun the tests then verify

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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify t

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❯ rerun the tests then verify th

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❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests then verify the j

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❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.2s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s





[?25h[?2026l[?2026h[?25l



❯ ch

[?25h[?2026l[?2026h[?25l



❯ che

[?25h[?2026l[?2026h[?25l



❯ chec

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s





[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l



❯ check 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check th

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check th

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❯ check the

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the s

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❯ check the se

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the ses

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the sess

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❯ check the sessi

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the sessi

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❯ check the sessio

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the session 

[?25h[?2026l[?2026h[?25l



❯ check the session s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session st

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the session sto

[?25h[?2026l[?2026h[?25l



❯ check the session stor

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the session store 

[?25h[?2026l[?2026h[?25l



❯ check the session store r

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store re

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session store ret

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❯ check the session store retr

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store







❯ check the session store retry

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session store retry 

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❯ check the session store retry l

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are



● Writing · 0.4s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the session store retry logic and

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❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on 



● Writing · 0.4s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l

not retried on transien



● Writing · 0.5s





[?25h[?2026l[?2026h[?25l









❯ re

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ rer

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l









❯ reru

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi



● Writing · 0.6s





[?25h[?2026l[?2026h[?25l









❯ rerun

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem







❯ rerun 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t







❯ rerun t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ rerun th

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❯ rerun the

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l



event and the session







❯ rerun the 

[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ rerun the t

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l



event and the session log diverges fr







❯ rerun the te

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 







❯ rerun the tes

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user



● Writing · 0.9s



❯ rerun the test

[?25h[?2026l[?2026h[?25l











❯ rerun the tests

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the tests

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❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





screen. 



● Writing · 1.0s





[?25h[?2026l[?2026h[?25l





screen. The fix 







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l













❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l













❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun the tests then ve

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with exp







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l







with exponential backoff







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests then verify the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests then verify the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l- `append` now ret







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l



● Writing · 1.7s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ c

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- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s



❯ che

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 







❯ chec

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde







❯ check

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s



❯ check 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check th

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- a `Write



● Writing · 2.1s



❯ check the

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 







❯ check the 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is







❯ check the s

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s



❯ check the se

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ check the ses

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 







❯ check the sess

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s





[?25h[?2026l[?2026h[?25l











❯ check the sessi

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the sessi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the sessio

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l













❯ check the session

[?25h[?2026l[?2026h[?25l





- no partial frame



● Writing · 2.4s



❯ check the session 

[?25h[?2026l[?2026h[?25l





- no partial frames are ev







❯ check the session s

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 







❯ check the session st

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j



● Writing · 2.5s



❯ check the session sto

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the session stor

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.6s



❯ check the session store

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

async appe







❯ check the session store 

[?25h[?2026l[?2026h[?25l

async append(event







❯ check the session store r

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ check the session store re

[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise







❯ check the session store retr

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ check the session store retry

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session store retry 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let atte







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt



● Writing · 2.9s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)



● Writing · 3.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the session store retry logic a

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(enco



● Writing · 3.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ r

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rer

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















[?25h[?2026l[?2026h[?25l









      return







❯ reru

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











    } catch (e







❯ rerun 

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













      if (



● Writing · 3.4s



❯ rerun th

[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ rerun the

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l













      if (!isTransient(err







❯ rerun the 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw



● Writing · 3.5s



❯ rerun the t

[?25h[?2026l[?2026h[?25l





















❯ rerun the te

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the te

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      awai







❯ rerun the tes

[?25h[?2026l[?2026h[?25l















      await delay(



● Writing · 3.6s



❯ rerun the test

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 







❯ rerun the tests

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l























❯ rerun the tests 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the tests th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun the tests the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.em







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l

























● Writing · 3.9s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l

























● Writing · 4.0s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests then verif

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loo







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests then verify 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel



● Editing src/context/engine.ts · 0.1s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

observations s







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows 



● Editing src/context/engine.ts · 0.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ c

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ ch

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ che

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l











❯ chec

[?25h[?2026l[?2026h[?25l



frame that the journal has not



● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l











❯ check

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ check t

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l











❯ check th

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ check th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the

[?25h[?2026l[?2026h[?25l





because 









[?25h[?2026l[?2026h[?25l













❯ check the 

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l













❯ check the s

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ check the se

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind









[?25h[?2026l[?2026h[?25l













❯ check the ses

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l













❯ check the sess

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ check the sessi

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ check the sessio

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s



❯ check the session

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the session 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 1.1s



❯ check the session s

[?25h[?2026l[?2026h[?25l







never started —









[?25h[?2026l[?2026h[?25l







never started — the jou







❯ check the session st

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started — the journal eit







❯ check the session sto

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s



❯ check the session stor

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full







❯ check the session store

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o







❯ check the session store 

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s



❯ check the session store r

[?25h[?2026l[?2026h[?25l















❯ check the session store re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.5s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check the session store retry l

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTra







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.7s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check the session store retry logic and 

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❯ check the session store retry logic and 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ 

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2. the backoff







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2. the backoff delays 









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2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ rer

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2. the backoff delays are cumulative w







❯ reru

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2. the backoff delays are cumulative worst-cas







❯ rerun

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2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s



❯ rerun 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un







❯ rerun t

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun th

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   the 100 m



● Editing src/context/engine.ts · 2.1s



❯ rerun the

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   the 100 ms budget







❯ rerun the 

[?25h[?2026l[?2026h[?25l













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   the 100 ms budget for a s









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❯ rerun the t

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   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l











❯ rerun the te

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   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ rerun the tes

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the test

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● Editing src/context/engine.ts · 2.3s



❯ rerun the tests

[?25h[?2026l[?2026h[?25lWith this in place t







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky









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❯ rerun the tests t

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun the tests the

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❯ rerun the tests then

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure



● Editing src/context/engine.ts · 2.5s





[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then 

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reproduci









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❯ rerun the tests then v

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reproducing under







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

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reproducing under load, and the a







❯ rerun the tests then veri

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[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ rerun the tests then verif

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reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then verify t

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loop bud



● Editing src/context/engine.ts · 2.8s



❯ rerun the tests then verify th

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loop budget. The







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loop budget. The remaini







❯ rerun the tests then verify the 

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loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s



❯ rerun the tests then verify the j

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loop budget. The remaining work is to su







❯ rerun the tests then verify the jo

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❯ rerun the tests then verify the jou

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loop budget. The remaining work is to surface `W



● Editing src/context/engine.ts · 3.0s





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❯ rerun the tests then verify the jour

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loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then verify the journ

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❯ rerun the tests then verify the journa

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the statu



● Editing src/context/engine.ts · 3.1s





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❯ rerun the tests then verify the journal

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the status bar so









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the status bar so a dying







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is



● Editing src/context/engine.ts · 3.1s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ ch

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 







❯ che

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ chec

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check

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reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check

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❯ check 

[?25h[?2026l[?2026h[?25l
❯ check t

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❯ check th

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❯ check the

[?25h[?2026l[?2026h[?25l
❯ check the 

[?25h[?2026l[?2026h[?25l
❯ check the s

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❯ check the se

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❯ check the ses

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❯ check the sess

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❯ check the sessi

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❯ check the sessio

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❯ check the session

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❯ check the session 

[?25h[?2026l[?2026h[?25l
❯ check the session s

[?25h[?2026l[?2026h[?25l
❯ check the session st

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❯ check the session sto

[?25h[?2026l[?2026h[?25l
❯ check the session stor

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❯ check the session store

[?25h[?2026l[?2026h[?25l
❯ check the session store 

[?25h[?2026l[?2026h[?25l
❯ check the session store r

[?25h[?2026l[?2026h[?25l
❯ check the session store re

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the session store re

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❯ check the session store ret

[?25h[?2026l[?2026h[?25l



❯ check the session store retr

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check the session store retry

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Reading src/session/store.ts · 0.5s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ r

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❯ re

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rer

[?25h[?2026l[?2026h[?25l



❯ reru

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun 

[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the

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❯ rerun the 

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s





[?25h[?2026l[?2026h[?25l



❯ rerun the t

[?25h[?2026l[?2026h[?25l



❯ rerun the te

[?25h[?2026l[?2026h[?25l



❯ rerun the tes

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s





[?25h[?2026l[?2026h[?25l



❯ rerun the test

[?25h[?2026l[?2026h[?25l



❯ rerun the tests

[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the tests then

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❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l## Session store retry l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the tests then ve

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❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



● Writing · 0.2s





[?25h[?2026l[?2026h[?25lThe failure point 







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



● Writing · 0.3s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



● Writing · 0.4s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun the tests then verify the 

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❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

not retried on 







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





● Writing · 0.5s





[?25h[?2026l[?2026h[?25l

not retried on transien







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l





● Writing · 0.6s





[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l





● Writing · 0.7s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ ch

[?25h[?2026l[?2026h[?25l



event and the session



● Writing · 0.8s





[?25h[?2026l[?2026h[?25l











❯ che

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log div







❯ chec

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr







❯ check

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 



● Writing · 0.9s



❯ check 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check th

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screen. 



● Writing · 1.0s



❯ check the

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the 

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ check the s

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s



❯ check the se

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 







❯ check the ses

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou







❯ check the sess

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s



❯ check the sessi

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the sessio

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







with exp







❯ check the session

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s



❯ check the session 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff







❯ check the session s

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke







❯ check the session st

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s



❯ check the session sto

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session stor

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ check the session store

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ check the session store 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



● Writing · 1.6s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l- `append`









[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l



● Writing · 1.8s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l





● Writing · 2.0s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi



● Writing · 2.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







● Writing · 2.1s



❯ re

[?25h[?2026l[?2026h[?25l



- a `Write









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 







❯ rer

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s



❯ rerun

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af







❯ rerun 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 







❯ rerun t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s



❯ rerun th

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ rerun the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the 

[?25h[?2026l[?2026h[?25l





- no parti



● Writing · 2.4s





[?25h[?2026l[?2026h[?25l





- no partial frame







❯ rerun the t

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frames are ev







❯ rerun the te

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 







❯ rerun the tes

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j



● Writing · 2.5s



❯ rerun the test

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.6s



❯ rerun the tests 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ rerun the tests t

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):



● Writing · 2.7s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt



● Writing · 2.9s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the tests then verify t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







      await







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the tests then verify the jour

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











    } catch (e







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (



● Writing · 3.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ c

[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ ch

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ che

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ chec

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ check

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s



❯ check 

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ check t

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 







❯ check th

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ check the 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the se

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ check the ses

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ check the sess

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s



❯ check the sessi

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'







❯ check the sessio

[?25h[?2026l[?2026h[?25l





























❯ check the session

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s



❯ check the session 

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loo







❯ check the session st

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the session sto

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel







❯ check the session stor

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr



● Editing src/context/engine.ts · 0.1s



❯ check the session store

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ check the session store 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e







❯ check the session store r

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus



● Editing src/context/engine.ts · 0.2s



❯ check the session store re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check the session store retry logic

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frame that the







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



frame that the journal







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ re

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because 







❯ rer

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s



❯ reru

[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ rerun

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind







❯ rerun 

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.9s



❯ rerun t

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l













❯ rerun th

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ rerun the

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ rerun the 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the t

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never started —







❯ rerun the te

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l







never started — the journal eit







❯ rerun the test

[?25h[?2026l[?2026h[?25l







never started — the journal either has 









[?25h[?2026l[?2026h[?25l















❯ rerun the tests

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full



● Editing src/context/engine.ts · 1.2s



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ rerun the tests t

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin









[?25h[?2026l[?2026h[?25l















❯ rerun the tests th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests th

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❯ rerun the tests the

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then

[?25h[?2026l[?2026h[?25lTwo details worth ca









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lTwo details worth calling ou



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.4s



❯ rerun the tests then ve

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❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l1. `isTra



● Editing src/context/engine.ts · 1.5s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.7s



❯ rerun the tests then verify the 

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❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

2. the backoff



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the tests then verify the journal 

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❯ rerun the tests then verify the journal 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ ch

[?25h[?2026l[?2026h[?25l



   the 100 ms budget







❯ che

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l











❯ chec

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu







❯ check 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check t

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● Editing src/context/engine.ts · 2.3s



❯ check th

[?25h[?2026l[?2026h[?25lWith this in place t







❯ check the

[?25h[?2026l[?2026h[?25l







❯ check the 

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ check the s

[?25h[?2026l[?2026h[?25l







❯ check the se

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ check the ses

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the sess

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reproduci







❯ check the sessi

[?25h[?2026l[?2026h[?25l









❯ check the sessio

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ check the session

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ check the session 

[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ check the session st

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check the session sto

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the session stor

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loop bud



● Editing src/context/engine.ts · 2.8s





[?25h[?2026l[?2026h[?25l











❯ check the session store

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ check the session store 

[?25h[?2026l[?2026h[?25l



loop budget. The remaini







❯ check the session store r

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 







❯ check the session store re

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ check the session store ret

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ check the session store retr

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the session store retry

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❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





the statu







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the session store retry logic a

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❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the session store retry logic and

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❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l


❯ check the session store retry logic and 



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l
❯ re

[?25h[?2026l[?2026h[?25l
❯ rer

[?25h[?2026l[?2026h[?25l
❯ reru

[?25h[?2026l[?2026h[?25l
❯ rerun

[?25h[?2026l[?2026h[?25l
❯ rerun 

[?25h[?2026l[?2026h[?25l
❯ rerun t

[?25h[?2026l[?2026h[?25l
❯ rerun th

[?25h[?2026l[?2026h[?25l
❯ rerun the

[?25h[?2026l[?2026h[?25l
❯ rerun the 

[?25h[?2026l[?2026h[?25l
❯ rerun the t

[?25h[?2026l[?2026h[?25l
❯ rerun the te

[?25h[?2026l[?2026h[?25l
❯ rerun the tes

[?25h[?2026l[?2026h[?25l
❯ rerun the test

[?25h[?2026l[?2026h[?25l
❯ rerun the tests

[?25h[?2026l[?2026h[?25l
❯ rerun the tests 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests t

[?25h[?2026l[?2026h[?25l
❯ rerun the tests th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests the

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests the

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❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the tests then verify the jo

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❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.7s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ c

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❯ ch

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ che

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ chec

[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check 

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check t

[?25h[?2026l[?2026h[?25l



❯ check th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the 

[?25h[?2026l[?2026h[?25l



❯ check the s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the se

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the ses

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the sess

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store







❯ check the sessi

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the sessio

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failur







❯ check the session 

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check the session st

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt







❯ check the session sto

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ check the session store

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr







❯ check the session store 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are



● Writing · 0.4s



❯ check the session store r

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on 







❯ check the session store ret

[?25h[?2026l[?2026h[?25l

not retried on transien



● Writing · 0.5s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a



● Writing · 0.6s





[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



event and the







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



event and the session log div



● Writing · 0.8s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user



● Writing · 0.9s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ r

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ re

[?25h[?2026l[?2026h[?25l





screen. 



● Writing · 1.0s





[?25h[?2026l[?2026h[?25l





screen. The fix 







❯ rer

[?25h[?2026l[?2026h[?25l













❯ reru

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ rerun

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 







❯ rerun 

[?25h[?2026l[?2026h[?25l













❯ rerun t

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret







❯ rerun th

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ rerun the 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s



❯ rerun the t

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ rerun the te

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ rerun the tes

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l











● Writing · 1.4s



❯ rerun the test

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 









[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo







❯ rerun the tests

[?25h[?2026l[?2026h[?25l















❯ rerun the tests 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l











● Writing · 1.5s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests the

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l- `append`







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l- `append` now ret







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l- `append` now retries up 







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l



● Writing · 1.7s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l



● Writing · 1.8s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the tests then verify

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l







● Writing · 2.2s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l







● Writing · 2.3s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ c

[?25h[?2026l[?2026h[?25l











❯ ch

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ che

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s





[?25h[?2026l[?2026h[?25l





- no partial frame







❯ chec

[?25h[?2026l[?2026h[?25l





- no partial frames are ev







❯ check

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 







❯ check 

[?25h[?2026l[?2026h[?25l









● Writing · 2.5s





[?25h[?2026l[?2026h[?25l













❯ check t

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ check th

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ check the 

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l

async append(event







❯ check the s

[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ check the se

[?25h[?2026l[?2026h[?25l





● Writing · 2.7s





[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):







❯ check the ses

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l









❯ check the sessi

[?25h[?2026l[?2026h[?25l





● Writing · 2.8s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the sessio

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ check the session

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;







❯ check the session 

[?25h[?2026l[?2026h[?25l







● Writing · 2.9s





[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt







❯ check the session s

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ check the session st

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)







❯ check the session sto

[?25h[?2026l[?2026h[?25l







● Writing · 3.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the session sto

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the session store

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







      await







❯ check the session store 

[?25h[?2026l[?2026h[?25l











● Writing · 3.1s





[?25h[?2026l[?2026h[?25l















❯ check the session store r

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ check the session store re

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco







❯ check the session store ret

[?25h[?2026l[?2026h[?25l











● Writing · 3.2s





[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event







❯ check the session store retr

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ check the session store retry 

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ check the session store retry l

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session store retry l

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















● Writing · 3.4s





[?25h[?2026l[?2026h[?25l





















❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

















● Writing · 3.5s





[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the session store retry logic an

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      await delay(







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 



● Writing · 3.6s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ r

[?25h[?2026l[?2026h[?25l



















● Writing · 3.7s



❯ re

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp









[?25h[?2026l[?2026h[?25l























❯ rer

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





















  this.bus.em







❯ rerun 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ rerun t

[?25h[?2026l[?2026h[?25l

























● Writing · 3.9s



❯ rerun th

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ









[?25h[?2026l[?2026h[?25l





























❯ rerun the

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ rerun the 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s



❯ rerun the t

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the te

[?25h[?2026l[?2026h[?25lThe retry loo







❯ rerun the tes

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tes

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel







❯ rerun the tests

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr



● Editing src/context/engine.ts · 0.1s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus







❯ rerun the tests the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations s







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the tests then verify 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



frame that the journal







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l



frame that the journal has not



● Editing src/context/engine.ts · 0.6s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then verify the jo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





because 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable f



● Editing src/context/engine.ts · 0.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ c

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ ch

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 1.0s



❯ che

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ che

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ chec

[?25h[?2026l[?2026h[?25l







never started —









[?25h[?2026l[?2026h[?25l















❯ check

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ check 

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ check t

[?25h[?2026l[?2026h[?25l







never started — the journal either has 









[?25h[?2026l[?2026h[?25l















❯ check th

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ check the

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ check the 

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin









[?25h[?2026l[?2026h[?25l















❯ check the s

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the se

[?25h[?2026l[?2026h[?25lTwo details 







❯ check the ses

[?25h[?2026l[?2026h[?25l







❯ check the sess

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ check the sessi

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.4s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTra



● Editing src/context/engine.ts · 1.5s



❯ check the session 

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ check the session st

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ check the session sto

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.7s



❯ check the session store

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 







❯ check the session store 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ check the session store r

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store re

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ check the session store ret

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ check the session store retry log

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l



   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



   the 100 ms budget







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the session store retry logic and

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in



● Editing src/context/engine.ts · 2.3s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ r

[?25h[?2026l[?2026h[?25l







❯ re

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ rer

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ reru

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ rerun t

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun th

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ rerun the 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ rerun the t

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



loop bud



● Editing src/context/engine.ts · 2.8s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



loop budget. The remaini







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then ve

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the statu









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then verify th

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❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests then verify the

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❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l


❯ rerun the tests then verify the journal 



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l
❯ ch

[?25h[?2026l[?2026h[?25l
❯ che

[?25h[?2026l[?2026h[?25l
❯ chec

[?25h[?2026l[?2026h[?25l
❯ check

[?25h[?2026l[?2026h[?25l
❯ check 

[?25h[?2026l[?2026h[?25l
❯ check t

[?25h[?2026l[?2026h[?25l
❯ check th

[?25h[?2026l[?2026h[?25l
❯ check the

[?25h[?2026l[?2026h[?25l
❯ check the 

[?25h[?2026l[?2026h[?25l
❯ check the s

[?25h[?2026l[?2026h[?25l
❯ check the se

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the se

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❯ check the ses

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the sess

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check the sessi

[?25h[?2026l[?2026h[?25l



❯ check the sessio

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ check the session 

[?25h[?2026l[?2026h[?25l



❯ check the session s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check the session st

[?25h[?2026l[?2026h[?25l



❯ check the session sto

[?25h[?2026l[?2026h[?25l



❯ check the session stor

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the session store

[?25h[?2026l[?2026h[?25l



❯ check the session store 

[?25h[?2026l[?2026h[?25l



❯ check the session store r

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check the session store re

[?25h[?2026l[?2026h[?25l



❯ check the session store ret

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the session store ret

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❯ check the session store retr

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the session store retry

[?25h[?2026l[?2026h[?25l



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the session store retry logic

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❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Thinking · 0.2s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l



❯ re

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rer

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ reru

[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ rerun 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ rerun th

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ rerun the

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ rerun the t

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ rerun the te

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ rerun the tes

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun the tests th

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❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ rerun the tests then verif

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❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the tests then verify the j

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❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





screen. 



● Writing · 1.0s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ c

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ c

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ ch

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ che

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ chec

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ check

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ check 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ check t

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ check th

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ check the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ check the

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❯ check the 

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the 

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❯ check the s

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the s

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❯ check the se

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check the ses

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check the sess

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ check the sessi

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check the session

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ check the session 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the session s

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❯ check the session st

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check the session sto

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ check the session store

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ check the session store 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the session store r

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check the session store re

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session store ret

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the session store retr

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry l

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





- no partial frame



● Writing · 2.4s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Writing · 2.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ r

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ re

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ rer

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ reru

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ rerun

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ rerun 

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun t

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ rerun th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ rerun the 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ rerun the t

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ rerun the te

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ rerun the tes

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ rerun the test

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the test

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests t

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the tests then ve

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l











    } catch (e







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ rerun the tests then veri

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

















● Writing · 3.5s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err









[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the tests then verify the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l















      await delay(







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.em







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ typ



● Writing · 3.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ







❯ c

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'







❯ ch

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 







❯ che

[?25h[?2026l[?2026h[?25l

























● Writing · 4.0s



❯ chec

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loo







❯ check 

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel







❯ check th

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ check the 

[?25h[?2026l[?2026h[?25l







❯ check the s

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ check the se

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

observations s







❯ check the sess

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s





[?25h[?2026l[?2026h[?25l

observations settle in







❯ check the sessi

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ check the sessio

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 







❯ check the session

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ check the session 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve







❯ check the session s

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ check the session st

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check the session sto

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



frame that the







❯ check the session stor

[?25h[?2026l[?2026h[?25l



frame that the journal







❯ check the session store

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l











❯ check the session store 

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte







❯ check the session store r

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ check the session store re

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 







❯ check the session store ret

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the session store retr

[?25h[?2026l[?2026h[?25l





because 







❯ check the session store retry

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l





because a cancel







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l













❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l













❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the session store retry logic a

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







never started —



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started — the jou







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has 



● Editing src/context/engine.ts · 1.2s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ r

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o







❯ rer

[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 1.3s



❯ reru

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin









[?25h[?2026l[?2026h[?25l















❯ rerun

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun

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❯ rerun 

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s



❯ rerun t

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ rerun th

[?25h[?2026l[?2026h[?25l







❯ rerun the

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ rerun the 

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[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ rerun the t

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ rerun the te

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ rerun the test

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`







❯ rerun the tests

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests the

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❯ rerun the tests then

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the tests then verif

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❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



   the 100 m



● Editing src/context/engine.ts · 2.1s





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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l













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   the 100 ms budget







❯ rerun the tests then verify t

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   the 100 ms budget for a s







❯ rerun the tests then verify th

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   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s





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❯ rerun the tests then verify the

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   the 100 ms budget for a settled-event flu







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the tests then verify the j

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● Editing src/context/engine.ts · 2.3s



❯ rerun the tests then verify the jo

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❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then verify the journal 

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❯ rerun the tests then verify the journal 



With this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ c

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reproduci









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s





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❯ che

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









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❯ check

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check t

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check th

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loop bud



● Editing src/context/engine.ts · 2.8s



❯ check the

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The







❯ check the 

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❯ check the s

[?25h[?2026l[?2026h[?25l



loop budget. The remaini



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 







❯ check the se

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ check the ses

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ check the sess

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 3.0s



❯ check the sessi

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the sessio

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the statu







❯ check the session

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s



❯ check the session 

[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ check the session s

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ check the session st

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the session store

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the session store r

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❯ check the session store re

[?25h[?2026l[?2026h[?25l
❯ check the session store ret

[?25h[?2026l[?2026h[?25l
❯ check the session store retr

[?25h[?2026l[?2026h[?25l
❯ check the session store retry

[?25h[?2026l[?2026h[?25l
❯ check the session store retry 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry l

[?25h[?2026l[?2026h[?25l
❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l
❯ check the session store retry log

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l


❯ check the session store retry logic and 



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l
❯ re

[?25h[?2026l[?2026h[?25l
❯ rer

[?25h[?2026l[?2026h[?25l
❯ reru

[?25h[?2026l[?2026h[?25l
❯ rerun

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun

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❯ rerun 

[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25l



❯ rerun the

[?25h[?2026l[?2026h[?25l



❯ rerun the 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l



❯ rerun the t

[?25h[?2026l[?2026h[?25l



❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s





[?25h[?2026l[?2026h[?25l



❯ rerun the test

[?25h[?2026l[?2026h[?25l



❯ rerun the tests

[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the tests then

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❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the tests then verify 

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[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the tests then verify the journal

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❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



## Session store



● Writing · 0.0s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ ch

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ ch

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❯ che

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failur







❯ chec

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt







❯ check t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ check th

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo







❯ check the

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr







❯ check the 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are



● Writing · 0.4s



❯ check the s

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the se

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[?25h[?2026l[?2026h[?25l

not retried on 







❯ check the ses

[?25h[?2026l[?2026h[?25l

not retried on transien



● Writing · 0.5s





[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI







❯ check the sessi

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a







❯ check the sessio

[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ check the session

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ check the session 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ check the session sto

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session







❯ check the session stor

[?25h[?2026l[?2026h[?25l



event and the session log div



● Writing · 0.8s





[?25h[?2026l[?2026h[?25l











❯ check the session store

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr







❯ check the session store 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 







❯ check the session store r

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user



● Writing · 0.9s



❯ check the session store re

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. 







❯ check the session store retr

[?25h[?2026l[?2026h[?25l





screen. The fix 



● Writing · 1.0s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session store retry logic

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l











● Writing · 1.3s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l







with exponential









[?25h[?2026l[?2026h[?25l







with exponential backoff







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event lo



● Writing · 1.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ r

[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l











● Writing · 1.5s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rer

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l- `append`







❯ rerun 

[?25h[?2026l[?2026h[?25l- `append` now ret







❯ rerun t

[?25h[?2026l[?2026h[?25l- `append` now retries up 







❯ rerun th

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s



❯ rerun the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E







❯ rerun the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /







❯ rerun the t

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s



❯ rerun the te

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the te

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s



❯ rerun the tests

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the tests then

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l







● Writing · 2.3s





[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tests then verify 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





- no parti







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l









● Writing · 2.4s





[?25h[?2026l[?2026h[?25l





- no partial frame







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l









● Writing · 2.5s





[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests then verify the jo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then verify the jou

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s





[?25h[?2026l[?2026h[?25l

async appe







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

async append(event







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l

async append(event: Sessio



● Writing · 2.7s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise



● Writing · 2.7s



❯ c

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {



● Writing · 2.8s





[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let atte







❯ che

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;







❯ chec

[?25h[?2026l[?2026h[?25l







● Writing · 2.9s





[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt







❯ check

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ check 

[?25h[?2026l[?2026h[?25l











❯ check t

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)



● Writing · 3.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the 

[?25h[?2026l[?2026h[?25l







      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l







      await this.jo







❯ check the s

[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ check the se

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ check the ses

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event







❯ check the sess

[?25h[?2026l[?2026h[?25l















❯ check the sessi

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the sessi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s



❯ check the sessio

[?25h[?2026l[?2026h[?25l



















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











    } catch (e







❯ check the session 

[?25h[?2026l[?2026h[?25l















● Writing · 3.4s



❯ check the session s

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check the session s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













      if (







❯ check the session st

[?25h[?2026l[?2026h[?25l





















❯ check the session sto

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s



❯ check the session stor

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ check the session store

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the session store

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ check the session store 

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ check the session store r

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ check the session store re

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 







❯ check the session store ret

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the session store retr

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ check the session store retry

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ check the session store retry 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the session store retry 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























❯ check the session store retry l

[?25h[?2026l[?2026h[?25l





























❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

























● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





























❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

























● Writing · 4.0s





[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session store retry logic an

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loo







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



● Writing · 4.1s





[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberatel



● Editing src/context/engine.ts · 0.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ r

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus







❯ rerun

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun 

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observations s







❯ rerun t

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s



❯ rerun th

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ rerun the

[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 



● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg







❯ rerun the t

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve







❯ rerun the te

[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 



● Editing src/context/engine.ts · 0.5s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the test

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[?25h[?2026l[?2026h[?25l



frame that the







❯ rerun the tests

[?25h[?2026l[?2026h[?25l



frame that the journal







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then 

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because 







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then verify th

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never started —







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lTwo details worth ca









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lTwo details worth calling ou



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



Two details worth calling ou



● Editing src/context/engine.ts · 1.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ c

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ ch

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.4s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25l1. `isTra



● Editing src/context/engine.ts · 1.5s



❯ chec

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ check

[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check t

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`







❯ check th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI







❯ check the

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 



● Editing src/context/engine.ts · 1.7s



❯ check the 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ check the s

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.7s



❯ check the s

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❯ check the se

[?25h[?2026l[?2026h[?25l

2. the backoff



● Editing src/context/engine.ts · 1.8s





[?25h[?2026l[?2026h[?25l









❯ check the ses

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu









[?25h[?2026l[?2026h[?25l









❯ check the sessi

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w



● Editing src/context/engine.ts · 1.9s



❯ check the sessio

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ check the session

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,







❯ check the session 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un



● Editing src/context/engine.ts · 2.0s



❯ check the session s

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the session s

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❯ check the session st

[?25h[?2026l[?2026h[?25l



   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the session sto

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ check the session stor

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ check the session store

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s



❯ check the session store 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e









[?25h[?2026l[?2026h[?25l











❯ check the session store r

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25lWith this in



● Editing src/context/engine.ts · 2.3s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ check the session store retry l

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

reproduci







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ r

[?25h[?2026l[?2026h[?25l



loop bud



● Editing src/context/engine.ts · 2.8s



❯ re

[?25h[?2026l[?2026h[?25l



loop budget. The









[?25h[?2026l[?2026h[?25l











❯ rer

[?25h[?2026l[?2026h[?25l



loop budget. The remaini









[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ rerun

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su









[?25h[?2026l[?2026h[?25l











❯ rerun 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W









[?25h[?2026l[?2026h[?25l











❯ rerun t

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ rerun th

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





the statu









[?25h[?2026l[?2026h[?25l













❯ rerun the 

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s



❯ rerun the t

[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ rerun the te

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ rerun the tes

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ rerun the test

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ rerun the tests th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests then verify the journa

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❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ c

[?25h[?2026l[?2026h[?25l



❯ ch

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ che

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ chec

[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check 

[?25h[?2026l[?2026h[?25l



❯ check t

[?25h[?2026l[?2026h[?25l



❯ check th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the

[?25h[?2026l[?2026h[?25l



❯ check the 

[?25h[?2026l[?2026h[?25l



❯ check the s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check the se

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❯ check the ses

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the ses

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❯ check the sess

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[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the sessi

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❯ check the sessio

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❯ check the session

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[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the session 

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❯ check the session s

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❯ check the session st

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[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the session sto

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❯ check the session stor

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the session store

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❯ check the session store 

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❯ check the session store r

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the session store re

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❯ check the session store ret

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❯ check the session store retr

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the session store retry

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❯ check the session store retry 

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❯ check the session store retry l

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the session store retry lo

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[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l## Session store









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❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





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❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe failur









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❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `S







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









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❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.appe



● Writing · 0.3s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo







❯ re

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ rer

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









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❯ reru

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ reru

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❯ rerun

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not retried on 









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● Writing · 0.5s



❯ rerun 

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not retried on transien









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❯ rerun t

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not retried on transient `EAGAI









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❯ rerun th

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not retried on transient `EAGAIN`, so a









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● Writing · 0.6s



❯ rerun the

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not retried on transient `EAGAIN`, so a busy fi









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❯ rerun the 

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[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









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❯ rerun the t

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









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● Writing · 0.7s



❯ rerun the te

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ rerun the te

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❯ rerun the tes

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event and the









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❯ rerun the test

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event and the session









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● Writing · 0.8s



❯ rerun the tests

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event and the session log div









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❯ rerun the tests 

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event and the session log diverges fr









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❯ rerun the tests t

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event and the session log diverges from what 









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● Writing · 0.9s



❯ rerun the tests th

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event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the tests the

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❯ rerun the tests then

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screen. 









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● Writing · 1.0s



❯ rerun the tests then 

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screen. The fix 









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❯ rerun the tests then v

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screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then ve

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screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret









[?25h[?2026l[?2026h[?25l









● Writing · 1.2s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun the tests then verify

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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l







with exp









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❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests then verify the jou

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❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests then verify the jour

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❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests then verify the journ

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❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append` now retries up 



● Writing · 1.6s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ ch

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ chec

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check

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❯ check 

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check t

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check th

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ check the

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ check the 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the s

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check the se

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check the se

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❯ check the ses

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the sess

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ check the sessi

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ check the sessio

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check the session

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ check the session 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ check the session s

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at









[?25h[?2026l[?2026h[?25l











❯ check the session st

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the session st

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❯ check the session sto

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ check the session stor

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ check the session store 

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ check the session store r

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ check the session store re

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the session store ret

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the session store ret

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● Writing · 2.6s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

async append(event









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❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {



● Writing · 2.8s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session store retry logic

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ rer

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ reru

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ rerun

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ rerun 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ rerun t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ rerun th

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ rerun the

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the

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❯ rerun the 

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ rerun the t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ rerun the t

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❯ rerun the te

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rerun the tes

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ rerun the test

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ rerun the tests

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the tests 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ rerun the tests t

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests th

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun the tests then ve

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❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests then verify th

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❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests then verify the 

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❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify the journa

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❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observations settle in



● Editing src/context/engine.ts · 0.3s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ che

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ check

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s



❯ check 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check 

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❯ check t

[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ check th

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ check the

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ check the 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 









[?25h[?2026l[?2026h[?25l











❯ check the ses

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ check the ses

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❯ check the sess

[?25h[?2026l[?2026h[?25l





because 



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the sessi

[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l













❯ check the sessio

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ check the session

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the session 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l













❯ check the session s

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ check the session st

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the session stor

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store

[?25h[?2026l[?2026h[?25l







never started —



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session store 

[?25h[?2026l[?2026h[?25l







never started — the jou









[?25h[?2026l[?2026h[?25l















❯ check the session store r

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ check the session store re

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session store ret

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l















❯ check the session store retr

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ check the session store retry

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the session store retry 

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❯ check the session store retry l

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check the session store retry logic

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[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



1. `isTransient` treats `EAGAIN`, `EBUSY`



● Editing src/context/engine.ts · 1.6s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.8s



❯ reru

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ reru

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❯ rerun

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ rerun 

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 1.9s



❯ rerun t

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu









[?25h[?2026l[?2026h[?25l









❯ rerun th

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.0s



❯ rerun the 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,









[?25h[?2026l[?2026h[?25l









❯ rerun the t

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2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the te

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● Editing src/context/engine.ts · 2.1s



❯ rerun the tes

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   the 100 m









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❯ rerun the test

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   the 100 ms budget









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❯ rerun the tests

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   the 100 ms budget for a s









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● Editing src/context/engine.ts · 2.2s



❯ rerun the tests 

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   the 100 ms budget for a settled-e









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❯ rerun the tests t

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   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ rerun the tests th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the tests th

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● Editing src/context/engine.ts · 2.3s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then

[?25h[?2026l[?2026h[?25lWith this in place t









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❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then veri

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❯ rerun the tests then verif

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reproduci









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❯ rerun the tests then verify

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reproducing under









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● Editing src/context/engine.ts · 2.6s



❯ rerun the tests then verify 

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reproducing under load, a









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❯ rerun the tests then verify t

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reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify th

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reproducing under load, and the append pa









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● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then verify the

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reproducing under load, and the append path stays









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.8s



❯ rerun the tests then verify the j

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❯ rerun the tests then verify the jo

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loop bud









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❯ rerun the tests then verify the jou

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loop budget. The









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❯ rerun the tests then verify the jour

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loop budget. The remaini



● Editing src/context/engine.ts · 2.9s





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❯ rerun the tests then verify the journ

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loop budget. The remaining work 









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❯ rerun the tests then verify the journa

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loop budget. The remaining work is to su









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❯ rerun the tests then verify the journal

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loop budget. The remaining work is to surface `W



● Editing src/context/engine.ts · 3.0s





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❯ rerun the tests then verify the journal 

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loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ c

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❯ ch

[?25h[?2026l[?2026h[?25l





the statu



● Editing src/context/engine.ts · 3.1s





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❯ che

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the status bar so









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❯ chec

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the status bar so a dying









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❯ check

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the status bar so a dying disk is



● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l













❯ check 

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the status bar so a dying disk is visible









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❯ check t

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the status bar so a dying disk is visible before 









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❯ check th

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the status bar so a dying disk is visible before data is 



● Editing src/context/engine.ts · 3.3s





[?25h[?2026l[?2026h[?25l













❯ check the

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the

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❯ check the 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the 

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❯ check the s

[?25h[?2026l[?2026h[?25l
❯ check the se

[?25h[?2026l[?2026h[?25l
❯ check the ses

[?25h[?2026l[?2026h[?25l
❯ check the sess

[?25h[?2026l[?2026h[?25l
❯ check the sessi

[?25h[?2026l[?2026h[?25l
❯ check the sessio

[?25h[?2026l[?2026h[?25l
❯ check the session

[?25h[?2026l[?2026h[?25l
❯ check the session 

[?25h[?2026l[?2026h[?25l
❯ check the session s

[?25h[?2026l[?2026h[?25l
❯ check the session st

[?25h[?2026l[?2026h[?25l
❯ check the session sto

[?25h[?2026l[?2026h[?25l
❯ check the session stor

[?25h[?2026l[?2026h[?25l
❯ check the session store

[?25h[?2026l[?2026h[?25l
❯ check the session store 

[?25h[?2026l[?2026h[?25l
❯ check the session store r

[?25h[?2026l[?2026h[?25l
❯ check the session store re

[?25h[?2026l[?2026h[?25l
❯ check the session store ret

[?25h[?2026l[?2026h[?25l
❯ check the session store retr

[?25h[?2026l[?2026h[?25l
❯ check the session store retry

[?25h[?2026l[?2026h[?25l
❯ check the session store retry 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry l

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the session store retry l

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❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Reading src/session/store.ts · 0.3s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s





[?25h[?2026l[?2026h[?25l



❯ re

[?25h[?2026l[?2026h[?25l



❯ rer

[?25h[?2026l[?2026h[?25l



❯ reru

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s





[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun

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❯ rerun 

[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s





[?25h[?2026l[?2026h[?25l



❯ rerun th

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❯ rerun the

[?25h[?2026l[?2026h[?25l



❯ rerun the 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s





[?25h[?2026l[?2026h[?25l



❯ rerun the t

[?25h[?2026l[?2026h[?25l



❯ rerun the te

[?25h[?2026l[?2026h[?25l



❯ rerun the tes

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the tes

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[?25h[?2026l[?2026h[?25l



❯ rerun the test

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ rerun the tests

[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the tests then veri

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[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l



● Writing · 0.1s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the tests then verify 

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[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l



● Writing · 0.2s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are



● Writing · 0.4s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun the tests then verify the jour

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❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on 







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l

not retried on transien



● Writing · 0.5s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a



● Writing · 0.5s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ ch

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem







❯ che

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t







❯ chec

[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ check

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check

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event and the







❯ check 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session







❯ check t

[?25h[?2026l[?2026h[?25l



event and the session log div



● Writing · 0.8s



❯ check th

[?25h[?2026l[?2026h[?25l











❯ check the

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ check the 

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 



● Writing · 0.9s





[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the se

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❯ check the ses

[?25h[?2026l[?2026h[?25l





screen. 



● Writing · 1.0s





[?25h[?2026l[?2026h[?25l





screen. The fix 







❯ check the sess

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ check the sessi

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa







❯ check the sessio

[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ check the session

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check the session 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check the session s

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







with exp







❯ check the session sto

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session stor

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l







with exponential backoff







❯ check the session store

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ check the session store 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 









[?25h[?2026l[?2026h[?25l















❯ check the session store r

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo



● Writing · 1.4s



❯ check the session store re

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append







❯ check the session store ret

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.4s



❯ check the session store retr

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the session store retry 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l- `append` now ret







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim









[?25h[?2026l[?2026h[?25l



● Writing · 1.7s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the session store retry logic a

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms 



● Writing · 1.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ r

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ re

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s



❯ rer

[?25h[?2026l[?2026h[?25l









❯ reru

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s



❯ rerun 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 







❯ rerun t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is







❯ rerun th

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l







● Writing · 2.2s



❯ rerun the

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af







❯ rerun the 

[?25h[?2026l[?2026h[?25l











❯ rerun the t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s



❯ rerun the te

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tes

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l













❯ rerun the test

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frame



● Writing · 2.4s



❯ rerun the tests

[?25h[?2026l[?2026h[?25l





- no partial frames are ev







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests t

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j



● Writing · 2.5s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async appe



● Writing · 2.6s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l









❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):



● Writing · 2.7s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l









❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





● Writing · 2.8s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the tests then verify

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;



● Writing · 2.9s





[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







● Writing · 3.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests then verify the jo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







      await







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







      await this.jo



● Writing · 3.1s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l











● Writing · 3.2s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









      return









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return



● Writing · 3.2s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ c

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ c

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ ch

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ che

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ che

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ chec

[?25h[?2026l[?2026h[?25l













      if (



● Writing · 3.4s





[?25h[?2026l[?2026h[?25l





















❯ check

[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ check 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err









[?25h[?2026l[?2026h[?25l





















❯ check t

[?25h[?2026l[?2026h[?25l

















● Writing · 3.5s



❯ check th

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















      awai







❯ check the 

[?25h[?2026l[?2026h[?25l



















● Writing · 3.6s



❯ check the s

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ check the se

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ check the ses

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the sess

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the sessi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.7s



❯ check the sessio

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.em



● Writing · 3.8s



❯ check the session

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ check the session 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ









[?25h[?2026l[?2026h[?25l





























❯ check the session s

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ check the session st

[?25h[?2026l[?2026h[?25l





























❯ check the session sto

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ check the session stor

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session store

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loo







❯ check the session store 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel







❯ check the session store re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr



● Editing src/context/engine.ts · 0.1s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ check the session store retr

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e







❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the session store retry l

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

observations s







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 



● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check the session store retry logic and

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



frame that the







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal



● Editing src/context/engine.ts · 0.5s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l



frame that the journal has not



● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l











❯ re

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte







❯ rer

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frame that the journal has not accepted. Inter







❯ reru

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frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s



❯ rerun

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun 

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because 







❯ rerun t

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because a cancel



● Editing src/context/engine.ts · 0.8s



❯ rerun th

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[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ rerun the

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because a cancelled write is ind









[?25h[?2026l[?2026h[?25l













❯ rerun the 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s



❯ rerun the t

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f







❯ rerun the te

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because a cancelled write is indistinguishable from a wr







❯ rerun the tes

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s



❯ rerun the test

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests

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never started —



● Editing src/context/engine.ts · 1.1s



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l















❯ rerun the tests t

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never started — the jou









[?25h[?2026l[?2026h[?25l















❯ rerun the tests th

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never started — the journal eit









[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests then ve

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[?25h[?2026l[?2026h[?25lTwo details 







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lTwo details worth calling out for re







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.5s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ rerun the tests then verify 

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❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests then verify the journ

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2. the backoff







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative w



● Editing src/context/engine.ts · 1.9s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ che

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check

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● Editing src/context/engine.ts · 2.1s



❯ check 

[?25h[?2026l[?2026h[?25l



   the 100 m









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   the 100 ms budget







❯ check t

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ check th

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s



❯ check the

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu







❯ check the 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the 

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❯ check the s

[?25h[?2026l[?2026h[?25lWith this in



● Editing src/context/engine.ts · 2.3s



❯ check the se

[?25h[?2026l[?2026h[?25lWith this in place t









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❯ check the ses

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ check the sess

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ check the sessi

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ check the sessio

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ check the session

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ check the session 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session 

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reproduci







❯ check the session s

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under







❯ check the session st

[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ check the session sto

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ check the session stor

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ check the session store

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s



❯ check the session store 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check the session store r

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the session store re

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loop bud



● Editing src/context/engine.ts · 2.8s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l











❯ check the session store retr

[?25h[?2026l[?2026h[?25l



loop budget. The









[?25h[?2026l[?2026h[?25l











❯ check the session store retry

[?25h[?2026l[?2026h[?25l



loop budget. The remaini



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 









[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the session store retry logi

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[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.1s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





the statu









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





the status bar so









[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is



● Editing src/context/engine.ts · 3.2s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 



● Editing src/context/engine.ts · 3.3s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is 



● Editing src/context/engine.ts · 3.3s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ r

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❯ re

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ re

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❯ rer

[?25h[?2026l[?2026h[?25l
❯ reru

[?25h[?2026l[?2026h[?25l
❯ rerun

[?25h[?2026l[?2026h[?25l
❯ rerun 

[?25h[?2026l[?2026h[?25l
❯ rerun t

[?25h[?2026l[?2026h[?25l
❯ rerun th

[?25h[?2026l[?2026h[?25l
❯ rerun the

[?25h[?2026l[?2026h[?25l
❯ rerun the 

[?25h[?2026l[?2026h[?25l
❯ rerun the t

[?25h[?2026l[?2026h[?25l
❯ rerun the te

[?25h[?2026l[?2026h[?25l
❯ rerun the tes

[?25h[?2026l[?2026h[?25l
❯ rerun the test

[?25h[?2026l[?2026h[?25l
❯ rerun the tests

[?25h[?2026l[?2026h[?25l
❯ rerun the tests 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests t

[?25h[?2026l[?2026h[?25l
❯ rerun the tests th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests then ve

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❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the tests then verify the journa

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[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.6s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ ch

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ che

[?25h[?2026l[?2026h[?25l



❯ chec

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check 

[?25h[?2026l[?2026h[?25l



❯ check t

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s





[?25h[?2026l[?2026h[?25l



❯ check th

[?25h[?2026l[?2026h[?25l



❯ check the

[?25h[?2026l[?2026h[?25l



❯ check the 

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s





[?25h[?2026l[?2026h[?25l



❯ check the s

[?25h[?2026l[?2026h[?25l



❯ check the se

[?25h[?2026l[?2026h[?25l



❯ check the ses

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s





[?25h[?2026l[?2026h[?25l



❯ check the sess

[?25h[?2026l[?2026h[?25l



❯ check the sessi

[?25h[?2026l[?2026h[?25l



❯ check the sessio

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s





[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session 

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l## Session store retry l







❯ check the session st

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session sto

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25l



● Writing · 0.2s





[?25h[?2026l[?2026h[?25lThe failure point 







❯ check the session store

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check the session store 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l







❯ check the session store r

[?25h[?2026l[?2026h[?25l



● Writing · 0.3s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe







❯ check the session store re

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25l



● Writing · 0.4s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAI



● Writing · 0.5s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l







● Writing · 0.6s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAIN`, so a busy fi







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops t



● Writing · 0.6s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









● Writing · 0.7s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event



● Writing · 0.7s



❯ check the session store retry logic an

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







event and the









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l







event and the session









[?25h[?2026l[?2026h[?25l











● Writing · 0.8s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







event and the session log div









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event and the session log div



● Writing · 0.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ r

[?25h[?2026l[?2026h[?25l







event and the session log diverges fr









[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l







event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l











● Writing · 0.9s



❯ rer

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l















❯ reru

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event and the session log diverges from what the user saw

on





● Writing · 0.9s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ rerun

[?25h[?2026l[?2026h[?25l











screen. 









[?25h[?2026l[?2026h[?25l















● Writing · 1.0s



❯ rerun 

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l











screen. The fix 









[?25h[?2026l[?2026h[?25l



















❯ rerun t

[?25h[?2026l[?2026h[?25l











screen. The fix wraps th









[?25h[?2026l[?2026h[?25l



















❯ rerun th

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l















● Writing · 1.1s



❯ rerun the

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journal write 







❯ rerun the 

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l



















❯ rerun the t

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journal write in a bounded ret









[?25h[?2026l[?2026h[?25l















● Writing · 1.2s



❯ rerun the te

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event and the session log diverges from what the user saw

on

screen. The fix wraps the journal write in a bounded retry

loop





● Writing · 1.2s



❯ rerun the tes

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















with exp









[?25h[?2026l[?2026h[?25l























❯ rerun the test

[?25h[?2026l[?2026h[?25l















with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















with exponential backoff







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l















with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l























❯ rerun the tests t

[?25h[?2026l[?2026h[?25l















with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l























❯ rerun the tests the

[?25h[?2026l[?2026h[?25l















with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wri

not retried on transient `EAGAIN`, so a busy filesystem dro

event and the session log diverges from what the user saw o

screen. The fix wraps the journal write in a bounded retry 

with exponential backoff, and keeps the event log append-on



● Writing · 1.5s



❯ rerun the tests then

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests then 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never

user-visible

- 



● Writing · 2.0s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never

user-visible

- a `WriteFailed` event is



● Writing · 2.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ c

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ ch

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l













❯ che

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l













❯ chec

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s





[?25h[?2026l[?2026h[?25l













❯ check

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never

user-visible

- a `WriteFailed` event is emitted only after the final

attempt

- 



● Writing · 2.3s



❯ check

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ check 

[?25h[?2026l[?2026h[?25l









- no parti









[?25h[?2026l[?2026h[?25l

















❯ check t

[?25h[?2026l[?2026h[?25l









- no partial frame



● Writing · 2.4s





[?25h[?2026l[?2026h[?25l



















[?25h[?2026l[?2026h[?25l

















❯ check th

[?25h[?2026l[?2026h[?25l









- no partial frames are ev









[?25h[?2026l[?2026h[?25l

















❯ check the

[?25h[?2026l[?2026h[?25l









- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l













● Writing · 2.5s



❯ check the 

[?25h[?2026l[?2026h[?25l









- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l

















❯ check the s

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visibl

- a `WriteFailed` event is emitted only after the final att

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the se

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the se

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ check the ses

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ check the sessi

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the sessio

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ check the session 

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ check the session s

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session st

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ check the session sto

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ check the session stor

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session store

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ check the session store 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ check the session store r

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the session store re

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store ret

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ check the session store retry

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco









[?25h[?2026l[?2026h[?25l











● Writing · 3.2s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the session store retry lo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ check the session store retry log

[?25h[?2026l[?2026h[?25l









      return









[?25h[?2026l[?2026h[?25l













● Writing · 3.3s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l



















❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















● Writing · 3.4s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw



● Writing · 3.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ r

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ re

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ rer

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ reru

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ rerun

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ rerun 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ rerun t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ rerun th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























❯ rerun the

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ rerun the 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ rerun the t

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ rerun the te

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ rerun the tes

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ rerun the test

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then ve

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



observations s









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.3s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



observations settle in









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l



observations settle in order, 









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



observations settle in order, and the 









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.4s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows 



● Editing src/context/engine.ts · 0.4s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.5s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the tests then verify the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







frame that the









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l







frame that the journal









[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 0.6s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







frame that the journal has not









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l







frame that the journal has not accepted. Inter









[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l







frame that the journal has not accepted. Interruption 









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l











because 



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l











because a cancel









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancel



● Editing src/context/engine.ts · 0.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ c

[?25h[?2026l[?2026h[?25l











because a cancelled writ









[?25h[?2026l[?2026h[?25l



















❯ ch

[?25h[?2026l[?2026h[?25l











because a cancelled write is ind



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l



















❯ che

[?25h[?2026l[?2026h[?25l











because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l



















❯ chec

[?25h[?2026l[?2026h[?25l











because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l



















❯ check

[?25h[?2026l[?2026h[?25l











because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l



















❯ check 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that



● Editing src/context/engine.ts · 1.0s



❯ check 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that

never s



● Editing src/context/engine.ts · 1.0s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















never started —







❯ check th

[?25h[?2026l[?2026h[?25l















never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ check the

[?25h[?2026l[?2026h[?25l























❯ check the 

[?25h[?2026l[?2026h[?25l















never started — the journal eit









[?25h[?2026l[?2026h[?25l















never started — the journal either has 







❯ check the s

[?25h[?2026l[?2026h[?25l



















● Editing src/context/engine.ts · 1.2s



❯ check the se

[?25h[?2026l[?2026h[?25l















never started — the journal either has the full









[?25h[?2026l[?2026h[?25l























❯ check the ses

[?25h[?2026l[?2026h[?25l















never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that

never started — the journal either has the full event or

nothin



● Editing src/context/engine.ts · 1.2s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

























❯ check the sess

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event b

observations settle in order, and the live region never sho

frame that the journal has not accepted. Interruption is sa

because a cancelled write is indistinguishable from a write

never started — the journal either has the full event or no



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the sessi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lTwo details 







❯ check the sessio

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ check the session 

[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ check the session st

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTra







❯ check the session sto

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ check the session stor

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `







❯ check the session store

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,



● Editing src/context/engine.ts · 1.6s



❯ check the session store 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`







❯ check the session store r

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 







❯ check the session store ret

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as

retryabl



● Editing src/context/engine.ts · 1.7s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as

retryable

2. the



● Editing src/context/engine.ts · 1.7s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



2. the backoff



● Editing src/context/engine.ts · 1.8s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



2. the backoff delays 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry l

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



2. the backoff delays are cumu







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



2. the backoff delays are cumulative w



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



2. the backoff delays are cumulative worst-case 42 ms,







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as

retryable

2. the backoff delays are cumulative worst-case 42 ms, well

un



● Editing src/context/engine.ts · 2.0s



❯ check the session store retry logic

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❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as

retryable

2. the backoff delays are cumulative worst-case 42 ms, well

under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the session store retry logic 

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❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l







   the 100 m









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l







   the 100 ms budget



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l







   the 100 ms budget for a s







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l







   the 100 ms budget for a settled-e









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as

retryable

2. the backoff delays are cumulative worst-case 42 ms, well

under

   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.1s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l







   the 100 ms budget for a settled-event flu



● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as re

2. the backoff delays are cumulative worst-case 42 ms, well

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ re

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❯ rer

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25lWith this in place t



● Editing src/context/engine.ts · 2.3s





[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ rerun 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ rerun t

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun th

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ rerun the

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the

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❯ rerun the 

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ rerun the t

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l

reproducing under load, a









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.6s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ rerun the test

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ rerun the tests

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ rerun the tests t

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside

the hot





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests th

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● Editing src/context/engine.ts · 2.8s





[?25h[?2026l[?2026h[?25l





loop bud







❯ rerun the tests the

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❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





loop budget. The









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l





loop budget. The remaini









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l





loop budget. The remaining work 







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l





loop budget. The remaining work is to su







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l





loop budget. The remaining work is to surface `W







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l





loop budget. The remaining work is to surface `WriteFail







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside

the hot

loop budget. The remaining work is to surface `WriteFailed`

in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then verif

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the statu







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l













● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l









the status bar so







❯ rerun the tests then verify 

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the status bar so a dying









[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l









the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l









the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l









the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l









the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside

the hot

loop budget. The remaining work is to surface `WriteFailed`

in

the status bar so a dying disk is visible before data is

lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then verify the jo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside th

loop budget. The remaining work is to surface `WriteFailed`

the status bar so a dying disk is visible before data is lo



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests then verify the jou

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❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l


❯ rerun the tests then verify the journal 



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l
❯ ch

[?25h[?2026l[?2026h[?25l
❯ che

[?25h[?2026l[?2026h[?25l
❯ chec

[?25h[?2026l[?2026h[?25l
❯ check

[?25h[?2026l[?2026h[?25l
❯ check 

[?25h[?2026l[?2026h[?25l
❯ check t

[?25h[?2026l[?2026h[?25l
❯ check th

[?25h[?2026l[?2026h[?25l
❯ check the

[?25h[?2026l[?2026h[?25l
❯ check the 

[?25h[?2026l[?2026h[?25l
❯ check the s

[?25h[?2026l[?2026h[?25l
❯ check the se

[?25h[?2026l[?2026h[?25l
❯ check the ses

[?25h[?2026l[?2026h[?25l
❯ check the sess

[?25h[?2026l[?2026h[?25l
❯ check the sessi

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the sessi

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❯ check the sessio

[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l



❯ check the session 

[?25h[?2026l[?2026h[?25l



❯ check the session s

[?25h[?2026l[?2026h[?25l



❯ check the session st

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l



❯ check the session sto

[?25h[?2026l[?2026h[?25l



❯ check the session stor

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check the session store

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store 

[?25h[?2026l[?2026h[?25l



❯ check the session store r

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the session store re

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store ret

[?25h[?2026l[?2026h[?25l



❯ check the session store retr

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check the session store retry

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the session store retry 

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❯ check the session store retry l

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the session store retry logic a

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❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Thinking · 0.1s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ re

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ rer

[?25h[?2026l[?2026h[?25l



❯ reru

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rerun 

[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ rerun the

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the

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❯ rerun the 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store







❯ rerun the t

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ rerun the te

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are



● Writing · 0.4s



❯ rerun the tests then

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❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not ret



● Writing · 0.4s



❯ rerun the tests then 

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❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l



not retried on 









[?25h[?2026l[?2026h[?25l







● Writing · 0.5s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



not retried on transien









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l







● Writing · 0.6s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops t



● Writing · 0.6s



❯ rerun the tests then verify 

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● Writing · 0.7s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event



● Writing · 0.7s



❯ rerun the tests then verify t

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❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l







event and the









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l







event and the session









[?25h[?2026l[?2026h[?25l











● Writing · 0.8s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







event and the session log div









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l







event and the session log diverges fr









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l











● Writing · 0.9s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event and the session log diverges from what the user saw

on





● Writing · 0.9s



❯ rerun the tests then verify the jour

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❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l











screen. 









[?25h[?2026l[?2026h[?25l















● Writing · 1.0s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l











screen. The fix 









[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l











screen. The fix wraps th









[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event and the session log diverges from what the user saw

on

screen. The fix wraps the journa



● Writing · 1.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ c

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l



















❯ ch

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l



















❯ che

[?25h[?2026l[?2026h[?25l











screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l



















❯ chec

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal

writes are

not retried on transient `EAGAIN`, so a busy filesystem

drops the

event and the session log diverges from what the user saw

on

screen. The fix wraps the journal write in a bounded retry

loop





● Writing · 1.2s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ check

[?25h[?2026l[?2026h[?25l















with exp









[?25h[?2026l[?2026h[?25l























❯ check 

[?25h[?2026l[?2026h[?25l















with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l























❯ check t

[?25h[?2026l[?2026h[?25l















with exponential backoff









[?25h[?2026l[?2026h[?25l























❯ check th

[?25h[?2026l[?2026h[?25l















with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l























❯ check the

[?25h[?2026l[?2026h[?25l















with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l























❯ check the 

[?25h[?2026l[?2026h[?25l















with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l























❯ check the s

[?25h[?2026l[?2026h[?25l















with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l























❯ check the se

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wri

not retried on transient `EAGAIN`, so a busy filesystem dro

event and the session log diverges from what the user saw o

screen. The fix wraps the journal write in a bounded retry 

with exponential backoff, and keeps the event log append-on



● Writing · 1.5s



❯ check the se

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the ses

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the sess

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the sess

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the sessi

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check the session

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check the session st

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session sto

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the session stor

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session store 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the session store r

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ check the session store re

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session store ret

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never

user-visible

- 



● Writing · 2.0s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









● Writing · 2.1s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





- a `Write









[?25h[?2026l[?2026h[?25l













❯ check the session store retry l

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l









● Writing · 2.2s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted









[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted only af







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted only after the 







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never

user-visible

- a `WriteFailed` event is emitted only after the final

attempt

- 



● Writing · 2.3s



❯ check the session store retry logic a

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









- no parti







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l













● Writing · 2.4s





[?25h[?2026l[?2026h[?25l

















❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l









- no partial frame









[?25h[?2026l[?2026h[?25l

















❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l









- no partial frames are ev









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never

user-visible

- a `WriteFailed` event is emitted only after the final

attempt

- no partial frames are ever kept 



● Writing · 2.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ r

[?25h[?2026l[?2026h[?25l













● Writing · 2.5s





[?25h[?2026l[?2026h[?25l









- no partial frames are ever kept in the j







❯ re

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visibl

- a `WriteFailed` event is emitted only after the final att

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rer

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s





[?25h[?2026l[?2026h[?25l

async appe







❯ rerun

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ rerun 

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l









❯ rerun t

[?25h[?2026l[?2026h[?25l





● Writing · 2.7s





[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):







❯ rerun th

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ rerun the 

[?25h[?2026l[?2026h[?25l





● Writing · 2.8s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ rerun the te

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l











❯ rerun the tes

[?25h[?2026l[?2026h[?25l







● Writing · 2.9s





[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt







❯ rerun the test

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ rerun the tests

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l











❯ rerun the tests 

[?25h[?2026l[?2026h[?25l







● Writing · 3.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







      await







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l











● Writing · 3.1s





[?25h[?2026l[?2026h[?25l







      await this.jo







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l











● Writing · 3.2s





[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the tests then verif

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











    } catch (e







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ rerun the tests then verify 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















● Writing · 3.4s





[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

















● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



















● Writing · 3.7s





[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.7s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

























● Writing · 3.8s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.em







❯ c

[?25h[?2026l[?2026h[?25l





























❯ ch

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ







❯ che

[?25h[?2026l[?2026h[?25l

























● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'







❯ chec

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 







❯ check

[?25h[?2026l[?2026h[?25l





























❯ check 

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loo







❯ check th

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel







❯ check the 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr



● Editing src/context/engine.ts · 0.1s



❯ check the s

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ check the se

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l







❯ check the ses

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ check the sess

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus



● Editing src/context/engine.ts · 0.2s



❯ check the sess

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❯ check the sessi

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the sessi

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observations s







❯ check the sessio

[?25h[?2026l[?2026h[?25l



observations settle in



● Editing src/context/engine.ts · 0.3s



❯ check the session

[?25h[?2026l[?2026h[?25l



observations settle in order, 







❯ check the session 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



observations settle in order, and the 







❯ check the session s

[?25h[?2026l[?2026h[?25l



observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s



❯ check the session st

[?25h[?2026l[?2026h[?25l











❯ check the session sto

[?25h[?2026l[?2026h[?25l



observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l











❯ check the session stor

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows 



● Editing src/context/engine.ts · 0.5s



❯ check the session stor

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❯ check the session store

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check the session store

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frame that the









[?25h[?2026l[?2026h[?25l















❯ check the session store 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







frame that the journal







❯ check the session store r

[?25h[?2026l[?2026h[?25l







frame that the journal has not



● Editing src/context/engine.ts · 0.6s



❯ check the session store re

[?25h[?2026l[?2026h[?25l







frame that the journal has not accepte







❯ check the session store ret

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







frame that the journal has not accepted. Inter









[?25h[?2026l[?2026h[?25l















❯ check the session store retr

[?25h[?2026l[?2026h[?25l







frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe





● Editing src/context/engine.ts · 0.7s



❯ check the session store retry 

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[?25h[?2026l[?2026h[?25l











because 









[?25h[?2026l[?2026h[?25l



















❯ check the session store retry l

[?25h[?2026l[?2026h[?25l















● Editing src/context/engine.ts · 0.8s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l











because a cancel









[?25h[?2026l[?2026h[?25l











because a cancelled writ







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l











because a cancelled write is ind







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l











because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l











because a cancelled write is indistinguishable f







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l











because a cancelled write is indistinguishable from a wr







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that



● Editing src/context/engine.ts · 1.0s



❯ check the session store retry logic an

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❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the session store retry logic and

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















never started —



● Editing src/context/engine.ts · 1.1s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that

never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l























❯ re

[?25h[?2026l[?2026h[?25l















never started — the journal eit









[?25h[?2026l[?2026h[?25l



















● Editing src/context/engine.ts · 1.2s



❯ rer

[?25h[?2026l[?2026h[?25l















never started — the journal either has 









[?25h[?2026l[?2026h[?25l















never started — the journal either has the full







❯ reru

[?25h[?2026l[?2026h[?25l















never started — the journal either has the full event o







❯ rerun

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event

bus:

observations settle in order, and the live region never

shows a

frame that the journal has not accepted. Interruption is

safe

because a cancelled write is indistinguishable from a write

that

never started — the journal either has the full event or

nothin



● Editing src/context/engine.ts · 1.3s



❯ rerun 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event b

observations settle in order, and the live region never sho

frame that the journal has not accepted. Interruption is sa

because a cancelled write is indistinguishable from a write

never started — the journal either has the full event or no



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun 

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❯ rerun t

[?25h[?2026l[?2026h[?25lTwo details 







❯ rerun th

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s



❯ rerun the

[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ rerun the 

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ rerun the t

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.5s



❯ rerun the te

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.6s



❯ rerun the tests

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `









[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s



❯ rerun the tests th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests then 

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2. the backoff







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the tests then verify 

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❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



   the 100 m



● Editing src/context/engine.ts · 2.1s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the tests then verify the jo

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❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.3s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



With this in place the flaky `store.test.ts` failure



● Editing src/context/engine.ts · 2.4s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ ch

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❯ che

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ check

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ check 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ check t

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ check th

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check the

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



loop bud



● Editing src/context/engine.ts · 2.8s





[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ check the se

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaini







❯ check the ses

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check the sess

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ check the sessi

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ check the sessio

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ check the session

[?25h[?2026l[?2026h[?25l











❯ check the session 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the session 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





the statu









[?25h[?2026l[?2026h[?25l













❯ check the session s

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s



❯ check the session st

[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ check the session stor

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ check the session store

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 







❯ check the session store 

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ check the session store r

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ check the session store retr

[?25h[?2026l[?2026h[?25l
❯ check the session store retry

[?25h[?2026l[?2026h[?25l
❯ check the session store retry 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry l

[?25h[?2026l[?2026h[?25l
❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l
❯ check the session store retry log

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l


❯ check the session store retry logic and 



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ r

[?25h[?2026l[?2026h[?25l
❯ re

[?25h[?2026l[?2026h[?25l
❯ rer

[?25h[?2026l[?2026h[?25l
❯ reru

[?25h[?2026l[?2026h[?25l
❯ rerun

[?25h[?2026l[?2026h[?25l
❯ rerun 

[?25h[?2026l[?2026h[?25l
❯ rerun t

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ rerun the 

[?25h[?2026l[?2026h[?25l



❯ rerun the t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the te

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l



❯ rerun the test

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ rerun the tests

[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the tests then verify t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Thinking · 0.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ c

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ chec

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check t

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `S







❯ check th

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l







❯ check the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ check the 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo







❯ check the s

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l







❯ check the se

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are



● Writing · 0.4s





[?25h[?2026l[?2026h[?25l







❯ check the ses

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ check the sessi

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ check the sessio

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI







❯ check the session

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ check the session 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ check the session st

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ check the session sto

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the session sto

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session stor

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the







❯ check the session store

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ check the session store 

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ check the session store r

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges fr







❯ check the session store re

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check the session store retr

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the session store retr

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the session store retry

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry l

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and ke



● Writing · 1.3s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ r

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ rer

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ reru

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun t

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun th

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ rerun the

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ rerun the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ rerun the te

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /







❯ rerun the tes

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s



❯ rerun the test

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests 

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l





● Writing · 1.9s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms









[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





- no parti







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l





- no partial frame



● Writing · 2.4s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frames are ev







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 



● Writing · 2.5s





[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests then verify the jour

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

async appe



● Writing · 2.6s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent):



● Writing · 2.7s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise







❯ ch

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ che

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



  for (let atte







❯ check

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;



● Writing · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ check t

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ check th

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)



● Writing · 3.0s



❯ check the

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l















❯ check the se

[?25h[?2026l[?2026h[?25l







      await this.jo







❯ check the ses

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ check the sess

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s



❯ check the sessi

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event







❯ check the sessio

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ check the session 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ check the session s

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ check the session st

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check the session sto

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ check the session stor

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ check the session store

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s



❯ check the session store 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw







❯ check the session store r

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the session store re

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● Writing · 3.6s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l















      awai









[?25h[?2026l[?2026h[?25l























❯ check the session store retr

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ check the session store retry

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the session store retry lo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the session store retry log

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  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

























● Writing · 3.9s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ









[?25h[?2026l[?2026h[?25l





























❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session store retry logic and 

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[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loo



● Writing · 4.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ r

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel



● Editing src/context/engine.ts · 0.1s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr







❯ reru

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ rerun

[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus







❯ rerun t

[?25h[?2026l[?2026h[?25l







❯ rerun th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun th

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❯ rerun the

[?25h[?2026l[?2026h[?25l

observations s



● Editing src/context/engine.ts · 0.3s





[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ rerun the t

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 







❯ rerun the te

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg







❯ rerun the tes

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ rerun the tests

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the tests 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



frame that the







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



frame that the journal







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then ve

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





because 







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l





because a cancel







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then verify the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







never started —









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l







never started — the journal either has 









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full



● Editing src/context/engine.ts · 1.2s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



Two details 



● Editing src/context/engine.ts · 1.3s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25lTwo details worth ca







❯ ch

[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ che

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re







❯ chec

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.5s





[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ check t

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l1. `isTransient` treats `







❯ check th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ check the

[?25h[?2026l[?2026h[?25l







❯ check the 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI







❯ check the s

[?25h[?2026l[?2026h[?25l







❯ check the se

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl







❯ check the ses

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.8s





[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check the sess

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❯ check the sessi

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ check the sessio

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu







❯ check the session

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w







❯ check the session 

[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the session st

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un







❯ check the session sto

[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the session stor

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   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the session store

[?25h[?2026l[?2026h[?25l



   the 100 ms budget







❯ check the session store 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ check the session store r

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e







❯ check the session store re

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu







❯ check the session store ret

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the session store retr

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● Editing src/context/engine.ts · 2.3s





[?25h[?2026l[?2026h[?25lWith this in







❯ check the session store retry

[?25h[?2026l[?2026h[?25lWith this in place t







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







❯ check the session store retry l

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s





[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session store retry logi

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❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

reproduci







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

reproducing under







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.6s





[?25h[?2026l[?2026h[?25l

reproducing under load, a







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ re

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ rer

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● Editing src/context/engine.ts · 2.8s





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loop bud







❯ reru

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loop budget. The







❯ rerun

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loop budget. The remaini







❯ rerun 

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.9s





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loop budget. The remaining work 







❯ rerun t

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loop budget. The remaining work is to su







❯ rerun th

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loop budget. The remaining work is to surface `W







❯ rerun the

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● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l











❯ rerun the 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the t

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the statu







❯ rerun the te

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● Editing src/context/engine.ts · 3.1s





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the status bar so







❯ rerun the tes

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the status bar so a dying







❯ rerun the test

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the status bar so a dying disk is







❯ rerun the tests

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● Editing src/context/engine.ts · 3.2s





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the status bar so a dying disk is visible







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l













❯ rerun the tests t

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the status bar so a dying disk is visible before 









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the status bar so a dying disk is visible before data is 







❯ rerun the tests th

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● Editing src/context/engine.ts · 3.3s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests the

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests the

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❯ rerun the tests then

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests then

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❯ rerun the tests then 

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❯ rerun the tests then v

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❯ rerun the tests then ver

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❯ rerun the tests then veri

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❯ rerun the tests then verif

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❯ rerun the tests then verify

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❯ rerun the tests then verify 

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❯ rerun the tests then verify t

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❯ rerun the tests then verify th

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❯ rerun the tests then verify the

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❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jo

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❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journ

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❯ rerun the tests then verify the journa

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❯ rerun the tests then verify the journal

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❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests then verify the journal 

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❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.0s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



❯ ch

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l



❯ check 

[?25h[?2026l[?2026h[?25l



❯ check t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check th

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[?25h[?2026l[?2026h[?25l



❯ check the

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❯ check the 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the s

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❯ check the se

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❯ check the ses

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check the sess

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the sessi

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the sessi

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❯ check the sessio

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the session

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❯ check the session 

[?25h[?2026l[?2026h[?25l



❯ check the session s

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the session st

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[?25h[?2026l[?2026h[?25l



❯ check the session sto

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❯ check the session stor

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the session stor

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❯ check the session store

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store 

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the session store r

[?25h[?2026l[?2026h[?25l



❯ check the session store re

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store ret

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l



❯ check the session store retry

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session store retry logi

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❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session store retry logic a

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❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l



● Writing · 0.2s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `S



● Writing · 0.2s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ re

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ rerun

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun 

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❯ rerun t

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ rerun th

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ rerun the t

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ rerun the test

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ rerun the test

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❯ rerun the tests

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the tests then 

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[?25h[?2026l[?2026h[?25l













❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret









[?25h[?2026l[?2026h[?25l









● Writing · 1.2s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun the tests then verify t

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❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests then verify the journ

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❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests then verify the journa

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❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests then verify the journal

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❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append`



● Writing · 1.6s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ ch

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ chec

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E







❯ check

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check th

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check the

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ check the s

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the se

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the ses

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check the sess

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the sessi

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the sessio

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ check the session

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check the session s

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ check the session st

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ check the session sto

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at









[?25h[?2026l[?2026h[?25l











❯ check the session stor

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the session stor

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ check the session store 

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ check the session store r

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ check the session store re

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ check the session store retr

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the session store retr

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the session store retry

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; at



● Writing · 2.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ r

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ re

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rer

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rer

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ reru

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ rerun

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ rerun 

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ rerun t

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ rerun th

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ rerun the

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ rerun the 

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ rerun the t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ rerun the te

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ rerun the tes

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ rerun the tes

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ rerun the test

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ rerun the tests t

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the tests th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ rerun the tests the

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests then

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun the tests then veri

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests then verify the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests then verify the jo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ ch

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l









❯ che

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ check

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ check t

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s



❯ check th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the

[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ check the 

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ check the s

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ check the ses

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l











❯ check the sess

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 









[?25h[?2026l[?2026h[?25l











❯ check the sessi

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ check the sessi

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❯ check the sessio

[?25h[?2026l[?2026h[?25l





because 



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l













❯ check the session

[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the session 

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ check the session s

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l













❯ check the session st

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the session store 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the session store 

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❯ check the session store r

[?25h[?2026l[?2026h[?25l







never started —



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ check the session store re

[?25h[?2026l[?2026h[?25l







never started — the jou









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session store ret

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ check the session store retr

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





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❯ check the session store retry

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the session store retry lo

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[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check the session store retry logic a

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❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun 

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❯ rerun t

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ rerun th

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ rerun the t

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the test

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❯ rerun the tests

[?25h[?2026l[?2026h[?25l



   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e









[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the tests then

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● Editing src/context/engine.ts · 2.3s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then verify

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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.6s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

reproducing under load, a









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.8s



❯ rerun the tests then verify the jou

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❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



loop bud









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



loop budget. The









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



loop budget. The remaini



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to su



● Editing src/context/engine.ts · 2.9s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ c

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W



● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l











❯ ch

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25l











❯ che

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25l





the statu



● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l













❯ check

[?25h[?2026l[?2026h[?25l





the status bar so









[?25h[?2026l[?2026h[?25l













❯ check 

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ check t

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is



● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l













❯ check th

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible









[?25h[?2026l[?2026h[?25l













❯ check the

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ check the 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 



● Editing src/context/engine.ts · 3.3s





[?25h[?2026l[?2026h[?25l













❯ check the s

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the s

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❯ check the se

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the se

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ check the ses

[?25h[?2026l[?2026h[?25l
❯ check the sess

[?25h[?2026l[?2026h[?25l
❯ check the sessi

[?25h[?2026l[?2026h[?25l
❯ check the sessio

[?25h[?2026l[?2026h[?25l
❯ check the session

[?25h[?2026l[?2026h[?25l
❯ check the session 

[?25h[?2026l[?2026h[?25l
❯ check the session s

[?25h[?2026l[?2026h[?25l
❯ check the session st

[?25h[?2026l[?2026h[?25l
❯ check the session sto

[?25h[?2026l[?2026h[?25l
❯ check the session stor

[?25h[?2026l[?2026h[?25l
❯ check the session store

[?25h[?2026l[?2026h[?25l
❯ check the session store 

[?25h[?2026l[?2026h[?25l
❯ check the session store r

[?25h[?2026l[?2026h[?25l
❯ check the session store re

[?25h[?2026l[?2026h[?25l
❯ check the session store ret

[?25h[?2026l[?2026h[?25l
❯ check the session store retr

[?25h[?2026l[?2026h[?25l
❯ check the session store retry

[?25h[?2026l[?2026h[?25l
❯ check the session store retry 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry l

[?25h[?2026l[?2026h[?25l
❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l
❯ check the session store retry log

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Reading src/session/store.ts · 0.3s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ r

[?25h[?2026l[?2026h[?25l



❯ re

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rer

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ reru

[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun 

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun t

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun th

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[?25h[?2026l[?2026h[?25l



❯ rerun the

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rerun the 

[?25h[?2026l[?2026h[?25l



❯ rerun the t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the te

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l



❯ rerun the test

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





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❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the tests then verify

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l



● Writing · 0.1s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun the tests then verify the journal

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal writes are

not retried on 



● Writing · 0.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ che

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ chec

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ check

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s





[?25h[?2026l[?2026h[?25l









❯ check t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check th

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ check the

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s





[?25h[?2026l[?2026h[?25l











❯ check the 

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ check the ses

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check the sess

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the sess

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the sessi

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ check the sessio

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ check the session

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ check the session 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l













❯ check the session s

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check the session st

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session stor

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ check the session store 

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ check the session store r

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ check the session store re

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ check the session store ret

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ check the session store retr

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ check the session store retry

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ check the session store retry 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the session store retry l

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the session store retry l

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the session store retry lo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ r

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ re

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rer

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ reru

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun th

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ rerun the

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ rerun the 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ rerun the t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l











❯ rerun the te

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ rerun the tes

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l











❯ rerun the test

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ rerun the tests the

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests then 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the tests then verify t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the tests then verify the jou

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests then verify the jour

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(enco



● Writing · 3.2s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ c

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ ch

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ che

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ chec

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ check

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ check 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ check t

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ check th

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ check the

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ check the 

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ check the s

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ check the se

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ check the ses

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ check the sess

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ check the sessi

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the sessio

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ check the session

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ check the session 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the session 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























❯ check the session s

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ check the session st

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ check the session sto

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ check the session stor

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ check the session store

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ check the session store 

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ check the session store r

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry l

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the session store retry log

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows 



● Editing src/context/engine.ts · 0.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ r

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ re

[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ rer

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ reru

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ rerun

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ rerun 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.7s



❯ rerun t

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 









[?25h[?2026l[?2026h[?25l











❯ rerun th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ rerun the

[?25h[?2026l[?2026h[?25l





because 









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.8s



❯ rerun the 

[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l













❯ rerun the t

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ rerun the te

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.9s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l













❯ rerun the test

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ rerun the tests

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25l













❯ rerun the tests t

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ rerun the tests th

[?25h[?2026l[?2026h[?25l







never started —



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests the

[?25h[?2026l[?2026h[?25l







never started — the jou









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests then veri

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests then verify the journal

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff



● Editing src/context/engine.ts · 1.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l









❯ che

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ check

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ check t

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check t

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● Editing src/context/engine.ts · 2.1s



❯ check th

[?25h[?2026l[?2026h[?25l



   the 100 m









[?25h[?2026l[?2026h[?25l











❯ check the

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ check the 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s



❯ check the s

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   the 100 ms budget for a settled-e









[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ check the ses

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the ses

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● Editing src/context/engine.ts · 2.3s



❯ check the sess

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ check the sessi

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ check the session

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25l







❯ check the session 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`









[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ check the session st

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session st

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❯ check the session sto

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.6s



❯ check the session store

[?25h[?2026l[?2026h[?25l

reproducing under load, a









[?25h[?2026l[?2026h[?25l









❯ check the session store 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ check the session store r

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.7s



❯ check the session store re

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays









[?25h[?2026l[?2026h[?25l









❯ check the session store ret

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the session store retr

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● Editing src/context/engine.ts · 2.8s



❯ check the session store retry

[?25h[?2026l[?2026h[?25l



loop bud









[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



loop budget. The









[?25h[?2026l[?2026h[?25l











❯ check the session store retry l

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaini



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W



● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the session store retry logic 

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❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





the statu









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.1s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





the status bar so









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is



● Editing src/context/engine.ts · 3.2s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible









[?25h[?2026l[?2026h[?25l













❯ re

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ rer

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.3s



❯ reru

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ reru

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❯ rerun

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun

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❯ rerun 

[?25h[?2026l[?2026h[?25l
❯ rerun t

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❯ rerun th

[?25h[?2026l[?2026h[?25l
❯ rerun the

[?25h[?2026l[?2026h[?25l
❯ rerun the 

[?25h[?2026l[?2026h[?25l
❯ rerun the t

[?25h[?2026l[?2026h[?25l
❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25l
❯ rerun the test

[?25h[?2026l[?2026h[?25l
❯ rerun the tests

[?25h[?2026l[?2026h[?25l
❯ rerun the tests 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests t

[?25h[?2026l[?2026h[?25l
❯ rerun the tests th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests then verif

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❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the tests then verify the journal 

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❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.5s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



❯ ch

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ che

[?25h[?2026l[?2026h[?25l



❯ chec

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check 

[?25h[?2026l[?2026h[?25l



❯ check t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check th

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check th

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❯ check the

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the s

[?25h[?2026l[?2026h[?25l



❯ check the se

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the ses

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the sess

[?25h[?2026l[?2026h[?25l



❯ check the sessi

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the sessio

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l



❯ check the session 

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the session s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session st

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session st

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❯ check the session sto

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l



● Writing · 0.1s



❯ check the session stor

[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session store

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❯ check the session store 

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l



● Writing · 0.2s



❯ check the session store r

[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s



❯ check the session store retr

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the session store retry lo

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❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

not retried on 



● Writing · 0.5s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t



● Writing · 0.7s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the session store retry logic and 

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[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ re

[?25h[?2026l[?2026h[?25l



event and the session



● Writing · 0.8s





[?25h[?2026l[?2026h[?25l











❯ rer

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 







❯ rerun

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user



● Writing · 0.9s



❯ rerun 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun t

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screen. 







❯ rerun th

[?25h[?2026l[?2026h[?25l





screen. The fix 



● Writing · 1.0s



❯ rerun the

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ rerun the 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa







❯ rerun the t

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l













❯ rerun the te

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou







❯ rerun the tes

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret







❯ rerun the test

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exp







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l







with exponential









[?25h[?2026l[?2026h[?25l















❯ rerun the tests t

[?25h[?2026l[?2026h[?25l







with exponential backoff



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo



● Writing · 1.4s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests then ve

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests then veri

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l- `append` now ret







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up 







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E



● Writing · 1.7s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





● Writing · 1.9s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





● Writing · 2.0s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



- a `Write







❯ c

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 



● Writing · 2.1s



❯ ch

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ che

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted







❯ chec

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af



● Writing · 2.2s



❯ check

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 







❯ check 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at







❯ check t

[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ check th

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ check the 

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l





- no partial frames are ev







❯ check the s

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 







❯ check the se

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j



● Writing · 2.5s



❯ check the ses

[?25h[?2026l[?2026h[?25l













❯ check the sess

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the sess

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the sessi

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the sessi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

async appe



● Writing · 2.6s



❯ check the sessio

[?25h[?2026l[?2026h[?25l

async append(event







❯ check the session

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: Sessio







❯ check the session 

[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the session s

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise







❯ check the session st

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {







❯ check the session sto

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session stor

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



  for (let atte







❯ check the session store

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session store 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt



● Writing · 2.9s



❯ check the session store r

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at







❯ check the session store re

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session store ret

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the session store retr

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







      await this.jo



● Writing · 3.1s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the session store retry logic

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















[?25h[?2026l[?2026h[?25l









      return







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session store retry logic a

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











    } catch (e







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ check the session store retry logic and

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













      if (



● Writing · 3.4s





[?25h[?2026l[?2026h[?25l





















❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTrans



● Writing · 3.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ r

[?25h[?2026l[?2026h[?25l























[?25h[?2026l[?2026h[?25l













      if (!isTransient(err







❯ re

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw



● Writing · 3.5s



❯ rer

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      awai







❯ rerun

[?25h[?2026l[?2026h[?25l















      await delay(



● Writing · 3.6s



❯ rerun 

[?25h[?2026l[?2026h[?25l























❯ rerun t

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp







❯ rerun th

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));



● Writing · 3.7s



❯ rerun the

[?25h[?2026l[?2026h[?25l























❯ rerun the 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.7s



❯ rerun the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























❯ rerun the t

[?25h[?2026l[?2026h[?25l





















  this.bus.em



● Writing · 3.8s





[?25h[?2026l[?2026h[?25l





























❯ rerun the te

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ rerun the tes

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





























❯ rerun the test

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loo







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests then

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr



● Editing src/context/engine.ts · 0.1s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e



● Editing src/context/engine.ts · 0.2s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verif

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

observations s







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

observations settle in



● Editing src/context/engine.ts · 0.3s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the tests then verify the jo

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[?25h[?2026l[?2026h[?25l



frame that the







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



frame that the journal



● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l





because 







❯ ch

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.8s



❯ che

[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ chec

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind







❯ check

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s



❯ check 

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f







❯ check t

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ check th

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s



❯ check the

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the 

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never started —







❯ check the s

[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 1.1s



❯ check the se

[?25h[?2026l[?2026h[?25l







never started — the jou









[?25h[?2026l[?2026h[?25l















❯ check the ses

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s



❯ check the sess

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full







❯ check the sessi

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the sessio

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s



❯ check the session

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the session 

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[?25h[?2026l[?2026h[?25lTwo details 







❯ check the session s

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s



❯ check the session st

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l







❯ check the session sto

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check the session store

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❯ check the session store 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ check the session store r

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ check the session store re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ check the session store ret

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check the session store retry lo

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2. the backoff







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.0s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the session store retry logic and 

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❯ check the session store retry logic and 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 m



● Editing src/context/engine.ts · 2.1s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l











❯ re

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ rer

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.2s



❯ reru

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e









[?25h[?2026l[?2026h[?25l











❯ rerun

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ rerun 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.3s



❯ rerun 

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❯ rerun t

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ rerun th

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ rerun the

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ rerun the 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun the t

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ rerun the te

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l









❯ rerun the tests

[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then 

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● Editing src/context/engine.ts · 2.8s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l



loop bud









[?25h[?2026l[?2026h[?25l



loop budget. The







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaini







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then verify t

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the statu







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l


❯ rerun the tests then verify the journal 



❯ c

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ ch

[?25h[?2026l[?2026h[?25l
❯ che

[?25h[?2026l[?2026h[?25l
❯ chec

[?25h[?2026l[?2026h[?25l
❯ check

[?25h[?2026l[?2026h[?25l
❯ check 

[?25h[?2026l[?2026h[?25l
❯ check t

[?25h[?2026l[?2026h[?25l
❯ check th

[?25h[?2026l[?2026h[?25l
❯ check the

[?25h[?2026l[?2026h[?25l
❯ check the 

[?25h[?2026l[?2026h[?25l
❯ check the s

[?25h[?2026l[?2026h[?25l
❯ check the se

[?25h[?2026l[?2026h[?25l
❯ check the ses

[?25h[?2026l[?2026h[?25l
❯ check the sess

[?25h[?2026l[?2026h[?25l
❯ check the sessi

[?25h[?2026l[?2026h[?25l
❯ check the sessio

[?25h[?2026l[?2026h[?25l
❯ check the session

[?25h[?2026l[?2026h[?25l
❯ check the session 

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the session 

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❯ check the session s

[?25h[?2026l[?2026h[?25l



❯ check the session st

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check the session sto

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session stor

[?25h[?2026l[?2026h[?25l



❯ check the session store

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ check the session store 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store r

[?25h[?2026l[?2026h[?25l



❯ check the session store re

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retr

[?25h[?2026l[?2026h[?25l



❯ check the session store retry

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the session store retry log

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❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the session store retry logic and 

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❯ check the session store retry logic and 



● Thinking · 0.0s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l



❯ re

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s





[?25h[?2026l[?2026h[?25l



❯ rer

[?25h[?2026l[?2026h[?25l



❯ reru

[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s





[?25h[?2026l[?2026h[?25l



❯ rerun 

[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s





[?25h[?2026l[?2026h[?25l



❯ rerun the

[?25h[?2026l[?2026h[?25l



❯ rerun the 

[?25h[?2026l[?2026h[?25l



❯ rerun the t

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s





[?25h[?2026l[?2026h[?25l



❯ rerun the te

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the te

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tes

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l## Session store retry l







❯ rerun the tests

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the tests

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



● Writing · 0.2s





[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ rerun the tests the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



● Writing · 0.3s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



● Writing · 0.4s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





● Writing · 0.5s





[?25h[?2026l[?2026h[?25l

not retried on transien







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ rerun the tests then verify the j

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log div







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the tests then verify the journal

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. 



● Writing · 1.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ c

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ ch

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ che

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ chec

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret









[?25h[?2026l[?2026h[?25l









● Writing · 1.2s



❯ check t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check th

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ check the

[?25h[?2026l[?2026h[?25l







with exponential









[?25h[?2026l[?2026h[?25l











● Writing · 1.3s



❯ check the 

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ check the s

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ check the se

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 









[?25h[?2026l[?2026h[?25l











● Writing · 1.4s



❯ check the ses

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ check the sess

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ check the sessi

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.4s



❯ check the sessi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l● Writing · 1.5s



❯ check the sessio

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the sessio

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session 

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check the session st

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ check the session sto

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check the session store

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ check the session store 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check the session store r

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store re

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check the session store ret

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry l

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check the session store retry lo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ r

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l













❯ re

[?25h[?2026l[?2026h[?25l





- no partial frame



● Writing · 2.4s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ rer

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ reru

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l













❯ rerun

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j



● Writing · 2.5s





[?25h[?2026l[?2026h[?25l













❯ rerun 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun th

[?25h[?2026l[?2026h[?25l

async appe



● Writing · 2.6s





[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l









❯ rerun the t

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):



● Writing · 2.7s





[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ rerun the test

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the test

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the tests then

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests then 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco









[?25h[?2026l[?2026h[?25l











● Writing · 3.2s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the tests then verify

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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l









      return









[?25h[?2026l[?2026h[?25l













● Writing · 3.3s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the tests then verify t

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[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.3s



❯ rerun the tests then verify the

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● Writing · 3.4s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err









[?25h[?2026l[?2026h[?25l

















● Writing · 3.5s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the tests then verify the jour

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❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l















      awai









[?25h[?2026l[?2026h[?25l



















● Writing · 3.6s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attemp



● Writing · 3.7s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l

























[?25h[?2026l[?2026h[?25l























❯ ch

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ ch

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❯ che

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.7s



❯ che

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● Writing · 3.8s



❯ chec

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ check

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ check 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ check t

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





























❯ check th

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ check the

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ check the 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the 

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[?25h[?2026l[?2026h[?25l







❯ check the s

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ check the se

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the se

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❯ check the ses

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ check the sess

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ check the sessi

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ check the session

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ check the session 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the session 

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❯ check the session s

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ check the session st

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l









❯ check the session sto

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ check the session store

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ check the session store 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ check the session store r

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s



❯ check the session store re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check the session store re

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❯ check the session store ret

[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ check the session store retr

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ check the session store retry

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ check the session store retry l

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.7s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 









[?25h[?2026l[?2026h[?25l











❯ check the session store retry log

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ check the session store retry log

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❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





because 









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.8s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.9s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25l













❯ re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ re

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❯ rer

[?25h[?2026l[?2026h[?25l







never started —



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ reru

[?25h[?2026l[?2026h[?25l







never started — the jou









[?25h[?2026l[?2026h[?25l















❯ rerun

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ rerun 

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ rerun t

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l















❯ rerun th

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ rerun the

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the 

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❯ rerun the t

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ rerun the te

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tes

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ rerun the tests

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ rerun the tests

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❯ rerun the tests 

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests the

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun the tests then ver

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❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the tests then verify the 

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● Editing src/context/engine.ts · 2.1s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



   the 100 m









[?25h[?2026l[?2026h[?25l



   the 100 ms budget







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the tests then verify the journa

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● Editing src/context/engine.ts · 2.3s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lWith this in place t







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



With this in place t



● Editing src/context/engine.ts · 2.3s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s





[?25h[?2026l[?2026h[?25l







❯ ch

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ che

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ chec

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ chec

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❯ check

[?25h[?2026l[?2026h[?25l

reproduci







❯ check 

[?25h[?2026l[?2026h[?25l

reproducing under







❯ check t

[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s





[?25h[?2026l[?2026h[?25l









❯ check th

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ check the

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l









❯ check the 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ check the s

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ check the se

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the ses

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loop bud



● Editing src/context/engine.ts · 2.8s





[?25h[?2026l[?2026h[?25l











❯ check the sess

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ check the sessi

[?25h[?2026l[?2026h[?25l











❯ check the sessio

[?25h[?2026l[?2026h[?25l



loop budget. The remaini









[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check the session

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ check the session 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ check the session s

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail







❯ check the session st

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the session sto

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the statu







❯ check the session stor

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l





the status bar so







❯ check the session store

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ check the session store 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l













❯ check the session store r

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible







❯ check the session store re

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l













❯ check the session store ret

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25l













❯ check the session store retr

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the session store retr

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❯ check the session store retry

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the session store retry

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❯ check the session store retry 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry l

[?25h[?2026l[?2026h[?25l
❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l
❯ check the session store retry log

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l


❯ check the session store retry logic and 



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l
❯ re

[?25h[?2026l[?2026h[?25l
❯ rer

[?25h[?2026l[?2026h[?25l
❯ reru

[?25h[?2026l[?2026h[?25l
❯ rerun

[?25h[?2026l[?2026h[?25l
❯ rerun 

[?25h[?2026l[?2026h[?25l
❯ rerun t

[?25h[?2026l[?2026h[?25l
❯ rerun th

[?25h[?2026l[?2026h[?25l
❯ rerun the

[?25h[?2026l[?2026h[?25l
❯ rerun the 

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the 

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❯ rerun the t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ rerun the te

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tes

[?25h[?2026l[?2026h[?25l



❯ rerun the test

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ rerun the tests

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the tests then veri

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❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the tests then verify the 

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❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Thinking · 0.3s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



❯ ch

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ che

[?25h[?2026l[?2026h[?25l



❯ chec

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ chec

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❯ check

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l



● Writing · 0.1s



❯ check 

[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l







❯ check t

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check t

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❯ check th

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l



● Writing · 0.2s



❯ check the

[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25l







❯ check the 

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check the s

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s



❯ check the se

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ check the ses

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ check the sess

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ check the sessi

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ check the sessio

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the sessio

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❯ check the session

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ check the session 

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ check the session st

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ check the session sto

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ check the session store

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ check the session store 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the session store 

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❯ check the session store r

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ check the session store re

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session



● Writing · 0.8s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ check the session store retr

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ check the session store retry

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 



● Writing · 0.9s





[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check the session store retry l

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the session store retry l

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❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l













❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session store retry logic and

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❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exp



● Writing · 1.2s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ re

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ rer

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ reru

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ rerun

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ rerun 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ rerun t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the 

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the t

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ rerun the te

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ rerun the tes

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ rerun the tests

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l







● Writing · 2.2s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tests then verify the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then verify the journal

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

async appe



● Writing · 2.6s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async appe



● Writing · 2.6s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l









❯ che

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):



● Writing · 2.7s





[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise







❯ check

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {



● Writing · 2.8s





[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check t

[?25h[?2026l[?2026h[?25l



  for (let atte







❯ check th

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;



● Writing · 2.9s





[?25h[?2026l[?2026h[?25l











❯ check the

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt







❯ check the 

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)



● Writing · 3.0s





[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the se

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the ses

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the sess

[?25h[?2026l[?2026h[?25l







      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l















❯ check the sessi

[?25h[?2026l[?2026h[?25l















❯ check the sessio

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l







      await this.journal.wr







❯ check the session

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ check the session 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ check the session s

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s



❯ check the session sto

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session sto

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ check the session stor

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ check the session store

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check the session store

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ check the session store 

[?25h[?2026l[?2026h[?25l













      if (







❯ check the session store r

[?25h[?2026l[?2026h[?25l













      if (!isTrans







❯ check the session store re

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ check the session store ret

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ check the session store retr

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















● Writing · 3.6s





[?25h[?2026l[?2026h[?25l















      awai







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l















      await delay(







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



















● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the session store retry log

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp









[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l























❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the session store retry logic

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























● Writing · 3.8s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the session store retry logic 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















  this.bus.em







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

























● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





























❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event 



● Writing · 3.9s



❯ r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

























● Writing · 4.0s





[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``







❯ re

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rer

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ reru

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel



● Editing src/context/engine.ts · 0.1s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr







❯ rerun t

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi







❯ rerun th

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e







❯ rerun the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus



● Editing src/context/engine.ts · 0.2s



❯ rerun the 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ rerun the t

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

observations s







❯ rerun the te

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, 







❯ rerun the test

[?25h[?2026l[?2026h[?25l









❯ rerun the tests

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 



● Editing src/context/engine.ts · 0.4s





[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the tests the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then

[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



frame that the journal



● Editing src/context/engine.ts · 0.6s





[?25h[?2026l[?2026h[?25l



frame that the journal has not







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the tests then verif

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because 







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests then verify the jou

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never started —









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







never started — the journal eit







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l







never started — the journal either has 









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event o



● Editing src/context/engine.ts · 1.2s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin







❯ ch

[?25h[?2026l[?2026h[?25l











● Editing src/context/engine.ts · 1.3s



❯ che

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ check

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ check 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lTwo details worth calling out for re







❯ check t

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.4s



❯ check th

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● Editing src/context/engine.ts · 1.5s



❯ check the

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ check the 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ check the s

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,







❯ check the se

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`







❯ check the ses

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the sess

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 







❯ check the sessi

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl







❯ check the sessio

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check the session

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2. the backoff







❯ check the session 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25l

2. the backoff delays 









[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ check the session st

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w







❯ check the session sto

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check the session store

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un







❯ check the session store 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the session store r

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   the 100 m



● Editing src/context/engine.ts · 2.1s



❯ check the session store re

[?25h[?2026l[?2026h[?25l



   the 100 ms budget







❯ check the session store ret

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ check the session store retr

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s



❯ check the session store retry

[?25h[?2026l[?2026h[?25l











❯ check the session store retry 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the session store retry 

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❯ check the session store retry l

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.3s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lWith this in









[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`



● Editing src/context/engine.ts · 2.5s





[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session store retry logic a

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❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

reproducing under



● Editing src/context/engine.ts · 2.6s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ re

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ rer

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays







❯ reru

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ rerun

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.8s



❯ rerun

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❯ rerun 

[?25h[?2026l[?2026h[?25l



loop bud







❯ rerun t

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ rerun th

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 2.9s





[?25h[?2026l[?2026h[?25l



loop budget. The remaini







❯ rerun the

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 







❯ rerun the 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ rerun the t

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 3.0s





[?25h[?2026l[?2026h[?25l











❯ rerun the te

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W









[?25h[?2026l[?2026h[?25l











❯ rerun the tes

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the tes

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❯ rerun the test

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l





the statu







❯ rerun the tests

[?25h[?2026l[?2026h[?25l





the status bar so







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ rerun the tests t

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.2s





[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible









[?25h[?2026l[?2026h[?25l













❯ rerun the tests the

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.3s





[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l













❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests then ve

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❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l


❯ rerun the tests then verify the journal 



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l
❯ c

[?25h[?2026l[?2026h[?25l
❯ ch

[?25h[?2026l[?2026h[?25l
❯ che

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check 

[?25h[?2026l[?2026h[?25l



❯ check t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check th

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ check the

[?25h[?2026l[?2026h[?25l



❯ check the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ check the s

[?25h[?2026l[?2026h[?25l



❯ check the se

[?25h[?2026l[?2026h[?25l



❯ check the ses

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ check the sess

[?25h[?2026l[?2026h[?25l



❯ check the sessi

[?25h[?2026l[?2026h[?25l



❯ check the sessio

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ check the session

[?25h[?2026l[?2026h[?25l



❯ check the session 

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the session 

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❯ check the session s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check the session st

[?25h[?2026l[?2026h[?25l



❯ check the session sto

[?25h[?2026l[?2026h[?25l



❯ check the session stor

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check the session store

[?25h[?2026l[?2026h[?25l



❯ check the session store 

[?25h[?2026l[?2026h[?25l



❯ check the session store r

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the session store re

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❯ check the session store ret

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the session store retr

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry

[?25h[?2026l[?2026h[?25l



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session store retry logic an

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



Th



● Writing · 0.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ r

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ re

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ rer

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s



❯ rerun

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ rerun 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ rerun th

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ rerun the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ rerun the t

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ rerun the te

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ rerun the test

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ rerun the tests

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests th

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps th







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret









[?25h[?2026l[?2026h[?25l









● Writing · 1.2s



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun the tests then verify the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exp







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests then verify the journal 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Writing · 1.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ c

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ c

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ ch

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ chec

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ check 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check th

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ check the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ check the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the s

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ check the se

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check the ses

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ check the sess

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l





● Writing · 2.0s



❯ check the sessi

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never









[?25h[?2026l[?2026h[?25l









❯ check the sessio

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ check the session

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







● Writing · 2.1s



❯ check the session 

[?25h[?2026l[?2026h[?25l



- a `Write









[?25h[?2026l[?2026h[?25l











❯ check the session s

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session st

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l







● Writing · 2.2s



❯ check the session sto

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted









[?25h[?2026l[?2026h[?25l











❯ check the session stor

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check the session store

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ check the session store 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at









[?25h[?2026l[?2026h[?25l











❯ check the session store r

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the session store re

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ check the session store retr

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ check the session store retry

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ check the session store retry l

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the session store retry l

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the session store retry lo

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session store retry logic and

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let atte



● Writing · 2.8s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ r

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;



● Writing · 2.9s





[?25h[?2026l[?2026h[?25l











❯ re

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ rer

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)



● Writing · 3.0s





[?25h[?2026l[?2026h[?25l











❯ rerun

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun t

[?25h[?2026l[?2026h[?25l







      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l















❯ rerun th

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ rerun the

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ rerun the 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l















❯ rerun the t

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ rerun the te

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ rerun the te

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ rerun the tes

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ rerun the test

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ rerun the test

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ rerun the tests

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ rerun the tests 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ rerun the tests 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ rerun the tests t

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests th

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests the

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun the tests then 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the tests then verify

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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun the tests then verify 

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❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l

























● Writing · 4.0s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests then verify the jou

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l



● Writing · 4.1s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous wi



● Editing src/context/engine.ts · 0.1s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ ch

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ che

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25l

observations s



● Editing src/context/engine.ts · 0.3s





[?25h[?2026l[?2026h[?25l









❯ check

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l

observations settle in order, and the 







❯ check t

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s



❯ check th

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve







❯ check the

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 







❯ check the 

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s



❯ check the s

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ check the s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the se

[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l



frame that the journal







❯ check the ses

[?25h[?2026l[?2026h[?25l



frame that the journal has not



● Editing src/context/engine.ts · 0.6s



❯ check the sess

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte







❯ check the sessi

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter







❯ check the sessio

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s



❯ check the session

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ check the session 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





because 







❯ check the session s

[?25h[?2026l[?2026h[?25l





because a cancel



● Editing src/context/engine.ts · 0.8s



❯ check the session st

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind









[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ check the session store 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ check the session store r

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ check the session store re

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the session store re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store ret

[?25h[?2026l[?2026h[?25l







never started —









[?25h[?2026l[?2026h[?25l















❯ check the session store retr

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







never started — the journal either has 









[?25h[?2026l[?2026h[?25l















❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ check the session store retry log

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25lTwo details worth ca









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25lTwo details worth calling ou



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.4s



❯ check the session store retry logic and 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l1. `isTra



● Editing src/context/engine.ts · 1.5s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



1. `isTra



● Editing src/context/engine.ts · 1.5s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ r

[?25h[?2026l[?2026h[?25l1. `isTransient` 







❯ re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s



❯ rer

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ reru

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rerun

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s



❯ rerun 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun t

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl







❯ rerun th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ rerun the 

[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ rerun the t

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ rerun the te

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ rerun the tes

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas









[?25h[?2026l[?2026h[?25l









❯ rerun the test

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ rerun the tests 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ rerun the tests t

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   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ rerun the tests the

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s





[?25h[?2026l[?2026h[?25l











❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lWith this in



● Editing src/context/engine.ts · 2.3s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place t







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests then verify th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

reproducing under







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

reproducing under load, a



● Editing src/context/engine.ts · 2.6s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the a







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays



● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then verify the journa

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loop bud



● Editing src/context/engine.ts · 2.8s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l













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loop budget. The







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaini



● Editing src/context/engine.ts · 2.8s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s



❯ ch

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loop budget. The remaining work is to su







❯ che

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loop budget. The remaining work is to surface `W







❯ chec

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loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ check

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check 

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❯ check t

[?25h[?2026l[?2026h[?25l





the statu









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the status bar so



● Editing src/context/engine.ts · 3.1s



❯ check th

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ check the

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ check the 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ check the s

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 







❯ check the se

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ check the ses

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ check the sess

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[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ check the sessi

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❯ check the sessio

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❯ check the session

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❯ check the session 

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❯ check the session s

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❯ check the session st

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❯ check the session sto

[?25h[?2026l[?2026h[?25l
❯ check the session stor

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❯ check the session store

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❯ check the session store 

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❯ check the session store r

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❯ check the session store re

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❯ check the session store ret

[?25h[?2026l[?2026h[?25l
❯ check the session store retr

[?25h[?2026l[?2026h[?25l
❯ check the session store retry

[?25h[?2026l[?2026h[?25l
❯ check the session store retry 

[?25h[?2026l[?2026h[?25l
❯ check the session store retry l

[?25h[?2026l[?2026h[?25l
❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l
❯ check the session store retry log

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l
❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ check the session store retry logic

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❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



● Reading src/session/store.ts · 0.2s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ re

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ rer

[?25h[?2026l[?2026h[?25l



❯ reru

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun 

[?25h[?2026l[?2026h[?25l



❯ rerun t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun th

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ rerun the

[?25h[?2026l[?2026h[?25l



❯ rerun the 

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ rerun the 

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❯ rerun the t

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ rerun the te

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❯ rerun the tes

[?25h[?2026l[?2026h[?25l





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❯ rerun the test

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ rerun the tests

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❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





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❯ rerun the tests t

[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ rerun the tests t

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❯ rerun the tests th

[?25h[?2026l[?2026h[?25l



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s





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❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ver

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❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ rerun the tests then verify t

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❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ rerun the tests then verify the 

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❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The failure point is in `SessionStore.append` — journal writes are



● Writing · 0.4s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ c

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❯ ch

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ che

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ chec

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ check

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ check 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ check t

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l









❯ check th

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ check the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the

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❯ check the 

[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ check the se

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ check the ses

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ check the sess

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ check the sessi

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ check the sessio

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the sessio

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❯ check the session

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ check the session 

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ check the session s

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ check the session st

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l













❯ check the session sto

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ check the session stor

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ check the session store

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l













❯ check the session store 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the session store 

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❯ check the session store r

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ check the session store re

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ check the session store ret

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l















❯ check the session store retr

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ check the session store retry

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ check the session store retry 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l















❯ check the session store retry l

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ check the session store retry lo

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❯ check the session store retry log

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the session store retry log

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❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the session store retry logi

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❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



- `append` now retries up to 3 times on `EAGAIN` /



● Writing · 1.7s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ re

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ re

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❯ rer

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ reru

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l









❯ rerun 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun t

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l









❯ rerun th

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l









❯ rerun the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the 

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ rerun the t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l











❯ rerun the te

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l







● Writing · 2.2s



❯ rerun the tes

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted









[?25h[?2026l[?2026h[?25l











❯ rerun the test

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l











❯ rerun the tests

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ rerun the tests 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at









[?25h[?2026l[?2026h[?25l











❯ rerun the tests t

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ rerun the tests the

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ rerun the tests then ve

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ rerun the tests then ver

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ rerun the tests then verify the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ rerun the tests then verify the journ

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ rerun the tests then verify the journa

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.jo



● Writing · 3.1s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ c

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ ch

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco









[?25h[?2026l[?2026h[?25l











● Writing · 3.2s



❯ che

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ chec

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ chec

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ check

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ check 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ check t

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l



















❯ check th

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





















❯ check the

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ check the 

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ check the s

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ check the se

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ check the ses

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ check the ses

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l























❯ check the sess

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ check the sessi

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ check the sessio

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ check the session

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ check the session 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ check the session s

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ check the session s

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ check the session st

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





























❯ check the session sto

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ check the session stor

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ check the session store

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





























❯ check the session store 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ check the session store r

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ check the session store re

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l































[?25h[?2026l[?2026h[?25l





























❯ check the session store ret

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ check the session store ret

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ check the session store retry

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ check the session store retry l

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry log

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logic

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ check the session store retry logic

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live reg



● Editing src/context/engine.ts · 0.4s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ r

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ re

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.5s



❯ rer

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rer

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



frame that the









[?25h[?2026l[?2026h[?25l











❯ rerun

[?25h[?2026l[?2026h[?25l



frame that the journal









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.6s



❯ rerun 

[?25h[?2026l[?2026h[?25l



frame that the journal has not









[?25h[?2026l[?2026h[?25l











❯ rerun t

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte









[?25h[?2026l[?2026h[?25l











❯ rerun th

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Inter









[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 0.7s



❯ rerun the

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 









[?25h[?2026l[?2026h[?25l











❯ rerun the 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ rerun the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the t

[?25h[?2026l[?2026h[?25l





because 









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 0.8s



❯ rerun the te

[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l













❯ rerun the tes

[?25h[?2026l[?2026h[?25l





because a cancelled writ









[?25h[?2026l[?2026h[?25l













❯ rerun the test

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui









[?25h[?2026l[?2026h[?25l













❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l













❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that









[?25h[?2026l[?2026h[?25l













❯ rerun the tests the

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ rerun the tests the

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❯ rerun the tests then

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never started —



● Editing src/context/engine.ts · 1.1s





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❯ rerun the tests then 

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never started — the jou









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l







never started — the journal eit









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ rerun the tests then verify

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❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25lTwo details worth ca



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lTwo details worth calling ou









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ rerun the tests then verify the 

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❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl



● Editing src/context/engine.ts · 1.7s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ c

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❯ ch

[?25h[?2026l[?2026h[?25l

2. the backoff









[?25h[?2026l[?2026h[?25l









❯ che

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ chec

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s





[?25h[?2026l[?2026h[?25l









❯ check

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w









[?25h[?2026l[?2026h[?25l









❯ check 

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas







❯ check t

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,



● Editing src/context/engine.ts · 2.0s





[?25h[?2026l[?2026h[?25l









❯ check th

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l









❯ check the

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ check the 

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   the 100 m



● Editing src/context/engine.ts · 2.1s





[?25h[?2026l[?2026h[?25l











❯ check the s

[?25h[?2026l[?2026h[?25l



   the 100 ms budget







❯ check the se

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s









[?25h[?2026l[?2026h[?25l











❯ check the ses

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s



❯ check the sess

[?25h[?2026l[?2026h[?25l











❯ check the sessi

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ check the sessi

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❯ check the sessio

[?25h[?2026l[?2026h[?25lWith this in



● Editing src/context/engine.ts · 2.3s



❯ check the session

[?25h[?2026l[?2026h[?25lWith this in place t







❯ check the session 

[?25h[?2026l[?2026h[?25lWith this in place the flaky









[?25h[?2026l[?2026h[?25l







❯ check the session s

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 2.4s



❯ check the session st

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ check the session sto

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25l







❯ check the session stor

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ check the session store

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❯ check the session store 

[?25h[?2026l[?2026h[?25l

reproduci









[?25h[?2026l[?2026h[?25l









❯ check the session store r

[?25h[?2026l[?2026h[?25l

reproducing under



● Editing src/context/engine.ts · 2.6s





[?25h[?2026l[?2026h[?25l









❯ check the session store re

[?25h[?2026l[?2026h[?25l

reproducing under load, a









[?25h[?2026l[?2026h[?25l









❯ check the session store ret

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ check the session store retr

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa



● Editing src/context/engine.ts · 2.7s





[?25h[?2026l[?2026h[?25l









❯ check the session store retry

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays









[?25h[?2026l[?2026h[?25l









❯ check the session store retry 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ check the session store retry 

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❯ check the session store retry l

[?25h[?2026l[?2026h[?25l



loop bud



● Editing src/context/engine.ts · 2.8s



❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l



loop budget. The remaini









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s



❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l







● Editing src/context/engine.ts · 3.0s



❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail









[?25h[?2026l[?2026h[?25l











❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ check the session store retry logic and

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❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l





the statu



● Editing src/context/engine.ts · 3.1s





[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



With this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the statu



● Editing src/context/engine.ts · 3.1s



❯ 

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the status bar so







❯ r

[?25h[?2026l[?2026h[?25l





the status bar so a dying







❯ re

[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is







❯ rer

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ reru

[?25h[?2026l[?2026h[?25l













❯ rerun

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 









[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.3s



❯ rerun 

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun th

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❯ rerun the

[?25h[?2026l[?2026h[?25l
❯ rerun the 

[?25h[?2026l[?2026h[?25l
❯ rerun the t

[?25h[?2026l[?2026h[?25l
❯ rerun the te

[?25h[?2026l[?2026h[?25l
❯ rerun the tes

[?25h[?2026l[?2026h[?25l
❯ rerun the test

[?25h[?2026l[?2026h[?25l
❯ rerun the tests

[?25h[?2026l[?2026h[?25l
❯ rerun the tests 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests t

[?25h[?2026l[?2026h[?25l
❯ rerun the tests th

[?25h[?2026l[?2026h[?25l
❯ rerun the tests the

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l
❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l
● Reading src/session/store.ts · 0.0s



❯ rerun the tests then verify 

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❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s



❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s



❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



● Reading src/session/store.ts · 0.4s



❯ 

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❯ c

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.5s



❯ ch

[?25h[?2026l[?2026h[?25l



❯ che

[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s



❯ check

[?25h[?2026l[?2026h[?25l



❯ check 

[?25h[?2026l[?2026h[?25l



❯ check t

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s



❯ check th

[?25h[?2026l[?2026h[?25l



❯ check the

[?25h[?2026l[?2026h[?25l



❯ check the 

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the 

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❯ check the s

[?25h[?2026l[?2026h[?25l



❯ check the se

[?25h[?2026l[?2026h[?25l● Thinking · 0.1s



❯ check the ses

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the sess

[?25h[?2026l[?2026h[?25l



❯ check the sessi

[?25h[?2026l[?2026h[?25l● Thinking · 0.2s



❯ check the sessio

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l



❯ check the session 

[?25h[?2026l[?2026h[?25l● Thinking · 0.3s



❯ check the session s

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l



❯ check the session st

[?25h[?2026l[?2026h[?25l



❯ check the session sto

[?25h[?2026l[?2026h[?25l● Thinking · 0.4s



❯ check the session stor

[?25h[?2026l[?2026h[?25l





[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the session stor

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❯ check the session store

[?25h[?2026l[?2026h[?25l## Session store









[?25h[?2026l[?2026h[?25l







❯ check the session store 

[?25h[?2026l[?2026h[?25l## Session store retry l



● Writing · 0.1s





[?25h[?2026l[?2026h[?25l







❯ check the session store r

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the session store r

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25lThe failur









[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25lThe failure point 



● Writing · 0.2s





[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









[?25h[?2026l[?2026h[?25l



● Writing · 0.3s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25l







❯ check the session store retry l

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









[?25h[?2026l[?2026h[?25l



● Writing · 0.4s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25l







❯ check the session store retry logi

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the session store retry logi

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

not retried on 









[?25h[?2026l[?2026h[?25l





● Writing · 0.5s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s



❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



The failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem



● Writing · 0.6s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ r

[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s



❯ re

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ re

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ rer

[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



event and the









[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s



❯ rerun

[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l











❯ rerun 

[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









[?25h[?2026l[?2026h[?25l











❯ rerun t

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s



❯ rerun th

[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25l











❯ rerun the

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ rerun the

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ rerun the 

[?25h[?2026l[?2026h[?25l





screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s



❯ rerun the t

[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l













❯ rerun the te

[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l













❯ rerun the tes

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa









[?25h[?2026l[?2026h[?25l









● Writing · 1.1s



❯ rerun the test

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l













❯ rerun the tests

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l













❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret









[?25h[?2026l[?2026h[?25l









● Writing · 1.2s



❯ rerun the tests t

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ rerun the tests t

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ rerun the tests th

[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l















❯ rerun the tests the

[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then

[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25l















❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ rerun the tests then veri

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ rerun the tests then verif

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ rerun the tests then verify

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ rerun the tests then verify the jou

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l

- backoff is 2 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l









❯ c

[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ ch

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ ch

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ che

[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l











❯ chec

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l











❯ check 

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l











❯ check t

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l











❯ check th

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l







● Writing · 2.3s



❯ check the

[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at









[?25h[?2026l[?2026h[?25l











❯ check the 

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the s

[?25h[?2026l[?2026h[?25l





- no parti









[?25h[?2026l[?2026h[?25l









● Writing · 2.4s



❯ check the se

[?25h[?2026l[?2026h[?25l





- no partial frame









[?25h[?2026l[?2026h[?25l













❯ check the ses

[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l













❯ check the sess

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l









● Writing · 2.5s



❯ check the sessi

[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j









[?25h[?2026l[?2026h[?25l













❯ check the sessio

[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the sessio

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



❯ check the session

[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the session

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l





● Writing · 2.6s



❯ check the session 

[?25h[?2026l[?2026h[?25l

async appe









[?25h[?2026l[?2026h[?25l









❯ check the session s

[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l









❯ check the session st

[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l





● Writing · 2.7s



❯ check the session sto

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):









[?25h[?2026l[?2026h[?25l









❯ check the session stor

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l









❯ check the session store

[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l





● Writing · 2.8s



❯ check the session store 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the session store 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ check the session store r

[?25h[?2026l[?2026h[?25l



  for (let atte









[?25h[?2026l[?2026h[?25l











❯ check the session store re

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0;









[?25h[?2026l[?2026h[?25l







● Writing · 2.9s



❯ check the session store ret

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt









[?25h[?2026l[?2026h[?25l











❯ check the session store retr

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l











❯ check the session store retry

[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l







● Writing · 3.0s



❯ check the session store retry 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the session store retry 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













❯ check the session store retry l

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the session store retry l

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l















❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l







      await









[?25h[?2026l[?2026h[?25l











● Writing · 3.1s



❯ check the session store retry log

[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logi

[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco









[?25h[?2026l[?2026h[?25l











● Writing · 3.2s



❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l















❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the session store retry logic a

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

















❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l









      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l

















❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the session store retry logic and

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



















❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (e



● Writing · 3.3s



❯ 

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❯ r

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ r

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❯ re

[?25h[?2026l[?2026h[?25l













      if (









[?25h[?2026l[?2026h[?25l





















❯ rer

[?25h[?2026l[?2026h[?25l













      if (!isTrans









[?25h[?2026l[?2026h[?25l





















❯ reru

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err



● Writing · 3.5s





[?25h[?2026l[?2026h[?25l





















❯ rerun

[?25h[?2026l[?2026h[?25l













      if (!isTransient(err)) throw









[?25h[?2026l[?2026h[?25l





















❯ rerun 

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

  



● Writing · 3.5s



❯ rerun 

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❯ rerun t

[?25h[?2026l[?2026h[?25l















      awai



● Writing · 3.6s





[?25h[?2026l[?2026h[?25l























❯ rerun th

[?25h[?2026l[?2026h[?25l















      await delay(









[?25h[?2026l[?2026h[?25l























❯ rerun the

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 









[?25h[?2026l[?2026h[?25l























❯ rerun the 

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attemp



● Writing · 3.7s





[?25h[?2026l[?2026h[?25l























❯ rerun the t

[?25h[?2026l[?2026h[?25l















      await delay(2 ** (2 * attempt + 1));









[?25h[?2026l[?2026h[?25l























❯ rerun the te

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

 



● Writing · 3.7s



❯ rerun the te

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



























❯ rerun the tes

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  thi



● Writing · 3.8s



❯ rerun the tes

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❯ rerun the test

[?25h[?2026l[?2026h[?25l





















  this.bus.em









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ typ









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests 

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'Writ



● Writing · 3.9s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests t

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed'









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests th

[?25h[?2026l[?2026h[?25l





















  this.bus.emit({ type: 'WriteFailed', event 









[?25h[?2026l[?2026h[?25l





























❯ rerun the tests the

[?25h[?2026l[?2026h[?25l  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

``



● Writing · 4.0s





[?25h[?2026l[?2026h[?25l





























❯ rerun the tests then

[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

      if (!isTransient(err)) throw err;

      await delay(2 ** (2 * attempt + 1));

    }

  }

  this.bus.emit({ type: 'WriteFailed', event });

}

```



The r



● Writing · 4.0s



❯ rerun the tests then

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❯ rerun the tests then 

[?25h[?2026l[?2026h[?25lThe retry loo









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then v

[?25h[?2026l[?2026h[?25l ▸ Edit src/context/engine.ts · +31 −12

The retry loop is del



● Editing src/context/engine.ts · 0.0s



❯ rerun the tests then v

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ rerun the tests then ve

[?25h[?2026l[?2026h[?25lThe retry loop is deliberatel









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.1s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchr









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then veri

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous wi









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verif

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the e









[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus









[?25h[?2026l[?2026h[?25l







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observ



● Editing src/context/engine.ts · 0.2s



❯ rerun the tests then verify 

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❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l

observations s









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.3s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25l

observations settle in









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the

[?25h[?2026l[?2026h[?25l

observations settle in order, 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l

observations settle in order, and the 









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 0.4s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live reg









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region neve









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l

observations settle in order, and the live region never shows 



● Editing src/context/engine.ts · 0.5s





[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame 



● Editing src/context/engine.ts · 0.5s



❯ rerun the tests then verify the jour

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



frame that the







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l



frame that the journal







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l



frame that the journal has not



● Editing src/context/engine.ts · 0.6s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepte







❯ rerun the tests then verify the journal 

[?25h[?2026l[?2026h[?25l

❯ rerun the tests then verify the journal 



The retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Inter



● Editing src/context/engine.ts · 0.6s



❯ 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l











❯ c

[?25h[?2026l[?2026h[?25l



frame that the journal has not accepted. Interruption 



● Editing src/context/engine.ts · 0.7s





[?25h[?2026l[?2026h[?25l











❯ ch

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe





● Editing src/context/engine.ts · 0.7s



❯ che

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❯ chec

[?25h[?2026l[?2026h[?25l





because 



● Editing src/context/engine.ts · 0.8s





[?25h[?2026l[?2026h[?25l





because a cancel









[?25h[?2026l[?2026h[?25l













❯ check

[?25h[?2026l[?2026h[?25l





because a cancelled writ







❯ check 

[?25h[?2026l[?2026h[?25l





because a cancelled write is ind







❯ check t

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistingui



● Editing src/context/engine.ts · 0.9s





[?25h[?2026l[?2026h[?25l













❯ check th

[?25h[?2026l[?2026h[?25l













❯ check the

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable f









[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a wr







❯ check the 

[?25h[?2026l[?2026h[?25l





because a cancelled write is indistinguishable from a write that



● Editing src/context/engine.ts · 1.0s





[?25h[?2026l[?2026h[?25l













❯ check the s

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never s



● Editing src/context/engine.ts · 1.0s



❯ check the se

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







never started —







❯ check the ses

[?25h[?2026l[?2026h[?25l







never started — the jou



● Editing src/context/engine.ts · 1.1s





[?25h[?2026l[?2026h[?25l















❯ check the sess

[?25h[?2026l[?2026h[?25l







never started — the journal eit







❯ check the sessi

[?25h[?2026l[?2026h[?25l















❯ check the sessio

[?25h[?2026l[?2026h[?25l







never started — the journal either has 



● Editing src/context/engine.ts · 1.2s





[?25h[?2026l[?2026h[?25l







never started — the journal either has the full









[?25h[?2026l[?2026h[?25l















❯ check the session

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event o







❯ check the session 

[?25h[?2026l[?2026h[?25l















❯ check the session s

[?25h[?2026l[?2026h[?25l







never started — the journal either has the full event or nothin



● Editing src/context/engine.ts · 1.3s





[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l















❯ check the session st

[?25h[?2026l[?2026h[?25lThe retry loop is deliberately synchronous with the event bus:

observations settle in order, and the live region never shows a

frame that the journal has not accepted. Interruption is safe

because a cancelled write is indistinguishable from a write that

never started — the journal either has the full event or nothing.



Two 



● Editing src/context/engine.ts · 1.3s



❯ check the session st

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







❯ check the session sto

[?25h[?2026l[?2026h[?25lTwo details 









[?25h[?2026l[?2026h[?25lTwo details worth ca







❯ check the session stor

[?25h[?2026l[?2026h[?25l



● Editing src/context/engine.ts · 1.4s





[?25h[?2026l[?2026h[?25lTwo details worth calling ou







❯ check the session store

[?25h[?2026l[?2026h[?25lTwo details worth calling out for re







❯ check the session store 

[?25h[?2026l[?2026h[?25l







❯ check the session store r

[?25h[?2026l[?2026h[?25lTwo details worth calling out for review:



1



● Editing src/context/engine.ts · 1.5s



❯ check the session store r

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[?25h[?2026l[?2026h[?25l







❯ check the session store re

[?25h[?2026l[?2026h[?25l1. `isTra









[?25h[?2026l[?2026h[?25l







❯ check the session store ret

[?25h[?2026l[?2026h[?25l1. `isTransient` 









[?25h[?2026l[?2026h[?25l







❯ check the session store retr

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `



● Editing src/context/engine.ts · 1.6s





[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l







❯ check the session store retry

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`,









[?25h[?2026l[?2026h[?25l







❯ check the session store retry 

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY`









[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EI







❯ check the session store retry l

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as 



● Editing src/context/engine.ts · 1.7s





[?25h[?2026l[?2026h[?25l







❯ check the session store retry lo

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryabl







❯ check the session store retry log

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the



● Editing src/context/engine.ts · 1.8s



❯ check the session store retry logi

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2. the backoff









[?25h[?2026l[?2026h[?25l









❯ check the session store retry logic

[?25h[?2026l[?2026h[?25l

2. the backoff delays 







❯ check the session store retry logic 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumu



● Editing src/context/engine.ts · 1.9s



❯ check the session store retry logic a

[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative w







❯ check the session store retry logic an

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-cas







❯ check the session store retry logic and

[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.0s



❯ check the session store retry logic and 

[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms,









[?25h[?2026l[?2026h[?25l

2. the backoff delays are cumulative worst-case 42 ms, well un









[?25h[?2026l[?2026h[?25l

❯ check the session store retry logic and 



1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well un



● Editing src/context/engine.ts · 2.0s



❯ r

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❯ re

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   t



● Editing src/context/engine.ts · 2.0s



❯ re

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● Editing src/context/engine.ts · 2.1s



❯ rer

[?25h[?2026l[?2026h[?25l



   the 100 m









[?25h[?2026l[?2026h[?25l



   the 100 ms budget









[?25h[?2026l[?2026h[?25l











❯ reru

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a s







❯ rerun

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-e



● Editing src/context/engine.ts · 2.2s



❯ rerun 

[?25h[?2026l[?2026h[?25l



   the 100 ms budget for a settled-event flu









[?25h[?2026l[?2026h[?25l











❯ rerun t

[?25h[?2026l[?2026h[?25l











❯ rerun th

[?25h[?2026l[?2026h[?25l1. `isTransient` treats `EAGAIN`, `EBUSY` and `EINTR` as retryable

2. the backoff delays are cumulative worst-case 42 ms, well under

   the 100 ms budget for a settled-event flush



With



● Editing src/context/engine.ts · 2.2s



❯ rerun th

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in



● Editing src/context/engine.ts · 2.3s



❯ rerun the

[?25h[?2026l[?2026h[?25lWith this in place t









[?25h[?2026l[?2026h[?25l







❯ rerun the 

[?25h[?2026l[?2026h[?25lWith this in place the flaky







❯ rerun the t

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.



● Editing src/context/engine.ts · 2.4s



❯ rerun the te

[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts`







❯ rerun the tes

[?25h[?2026l[?2026h[?25l







❯ rerun the test

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failure









[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

r



● Editing src/context/engine.ts · 2.5s



❯ rerun the tests

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[?25h[?2026l[?2026h[?25l

reproduci







❯ rerun the tests 

[?25h[?2026l[?2026h[?25l









❯ rerun the tests t

[?25h[?2026l[?2026h[?25l

reproducing under









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.6s



❯ rerun the tests th

[?25h[?2026l[?2026h[?25l

reproducing under load, a









[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l









❯ rerun the tests the

[?25h[?2026l[?2026h[?25l

reproducing under load, and the a









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append pa









[?25h[?2026l[?2026h[?25l





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then 

[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays









[?25h[?2026l[?2026h[?25l

reproducing under load, and the append path stays inside 









[?25h[?2026l[?2026h[?25l









❯ rerun the tests then v

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot





● Editing src/context/engine.ts · 2.7s



❯ rerun the tests then ve

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loop bud



● Editing src/context/engine.ts · 2.8s



❯ rerun the tests then ver

[?25h[?2026l[?2026h[?25l



loop budget. The







❯ rerun the tests then veri

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❯ rerun the tests then verif

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loop budget. The remaini









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loop budget. The remaining work 



● Editing src/context/engine.ts · 2.9s



❯ rerun the tests then verify

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to su







❯ rerun the tests then verify 

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `W







❯ rerun the tests then verify t

[?25h[?2026l[?2026h[?25l



loop budget. The remaining work is to surface `WriteFail



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then verify th

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

t



● Editing src/context/engine.ts · 3.0s



❯ rerun the tests then verify the

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the statu







❯ rerun the tests then verify the 

[?25h[?2026l[?2026h[?25l





the status bar so



● Editing src/context/engine.ts · 3.1s



❯ rerun the tests then verify the j

[?25h[?2026l[?2026h[?25l





the status bar so a dying









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jo

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is









[?25h[?2026l[?2026h[?25l













❯ rerun the tests then verify the jou

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible



● Editing src/context/engine.ts · 3.2s



❯ rerun the tests then verify the jour

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before 







❯ rerun the tests then verify the journ

[?25h[?2026l[?2026h[?25l





the status bar so a dying disk is visible before data is 







❯ rerun the tests then verify the journa

[?25h[?2026l[?2026h[?25l









● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then verify the journal

[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.





● Editing src/context/engine.ts · 3.3s



❯ rerun the tests then verify the journal

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lWith this in place the flaky `store.test.ts` failures stop

reproducing under load, and the append path stays inside the hot

loop budget. The remaining work is to surface `WriteFailed` in

the status bar so a dying disk is visible before data is lost.



 ▸ Run npm test · passed · 4.2s



❯ rerun the tests then verify the journal 

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❯ rerun the tests then verify the journal 



❯ 

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❯ c

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❯ ch

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❯ che

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❯ chec

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❯ check

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❯ check 

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❯ check t

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❯ check th

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❯ check the

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❯ check the 

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● Reading src/session/store.ts · 0.0s



❯ check the 

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[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.1s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.2s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.3s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.4s





[?25h[?2026l[?2026h[?25l ▸ Read src/session/store.ts · 212 lines

● Reading src/session/store.ts · 0.5s



❯ check the 

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[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.6s





[?25h[?2026l[?2026h[?25l● Reading src/session/store.ts · 0.7s





[?25h[?2026l[?2026h[?25l ▸ Search "retry" · 6 matches

● Thinking · 0.0s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l● Thinking · 0.1s





[?25h[?2026l[?2026h[?25l● Thinking · 0.2s





[?25h[?2026l[?2026h[?25l● Thinking · 0.3s





[?25h[?2026l[?2026h[?25l● Thinking · 0.4s





[?25h[?2026l[?2026h[?25l## Sessi



● Writing · 0.0s



❯ check the 

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● Writing · 0.1s





[?25h[?2026l[?2026h[?25l## Session store retry l









[?25h[?2026l[?2026h[?25l## Session store retry logic



Th



● Writing · 0.1s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lThe failur









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● Writing · 0.2s





[?25h[?2026l[?2026h[?25lThe failure point 









[?25h[?2026l[?2026h[?25lThe failure point is in `S









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionSt









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● Writing · 0.3s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.appe









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — jo









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal wr









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● Writing · 0.4s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not ret



● Writing · 0.4s



❯ check the 

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not retried on 









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● Writing · 0.5s





[?25h[?2026l[?2026h[?25l

not retried on transien









[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAI









[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a









[?25h[?2026l[?2026h[?25l





● Writing · 0.6s





[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy fi









[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem









[?25h[?2026l[?2026h[?25l

not retried on transient `EAGAIN`, so a busy filesystem drops t









[?25h[?2026l[?2026h[?25l





● Writing · 0.7s





[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event



● Writing · 0.7s



❯ check the 

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event and the









[?25h[?2026l[?2026h[?25l



event and the session









[?25h[?2026l[?2026h[?25l







● Writing · 0.8s





[?25h[?2026l[?2026h[?25l



event and the session log div









[?25h[?2026l[?2026h[?25l



event and the session log diverges fr









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event and the session log diverges from what 









[?25h[?2026l[?2026h[?25l







● Writing · 0.9s





[?25h[?2026l[?2026h[?25l



event and the session log diverges from what the user









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on





● Writing · 0.9s



❯ check the 

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screen. 









[?25h[?2026l[?2026h[?25l









● Writing · 1.0s





[?25h[?2026l[?2026h[?25l





screen. The fix 









[?25h[?2026l[?2026h[?25l





screen. The fix wraps th









[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journa



● Writing · 1.1s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write 









[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bou









[?25h[?2026l[?2026h[?25l





screen. The fix wraps the journal write in a bounded ret



● Writing · 1.2s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop





● Writing · 1.2s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l







with exp









[?25h[?2026l[?2026h[?25l







with exponential



● Writing · 1.3s





[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff









[?25h[?2026l[?2026h[?25l







with exponential backoff, and ke









[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the 



● Writing · 1.4s





[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event lo









[?25h[?2026l[?2026h[?25l







with exponential backoff, and keeps the event log append









[?25h[?2026l[?2026h[?25lThe failure point is in `SessionStore.append` — journal writes are

not retried on transient `EAGAIN`, so a busy filesystem drops the

event and the session log diverges from what the user saw on

screen. The fix wraps the journal write in a bounded retry loop

with exponential backoff, and keeps the event log append-only.



● Writing · 1.5s



❯ check the 

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[?25h[?2026l[?2026h[?25lKey chan



● Writing · 1.5s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25lKey changes:



- 



● Writing · 1.5s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l- `append`



● Writing · 1.6s





[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now ret









[?25h[?2026l[?2026h[?25l- `append` now retries up 









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 tim



● Writing · 1.7s





[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `E









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` /









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`



● Writing · 1.8s





[?25h[?2026l[?2026h[?25l









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backo



● Writing · 1.8s



❯ check the 

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- backoff is 2 









[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms



● Writing · 1.9s





[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms 









[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounde









[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never



● Writing · 2.0s





[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-vi









[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- 



● Writing · 2.0s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l



- a `Write



● Writing · 2.1s





[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `WriteFailed` 









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted



● Writing · 2.2s





[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only af









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the 









[?25h[?2026l[?2026h[?25l



- a `WriteFailed` event is emitted only after the final at



● Writing · 2.3s





[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- 



● Writing · 2.3s



❯ check the 

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- no parti









[?25h[?2026l[?2026h[?25l





- no partial frame



● Writing · 2.4s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l





- no partial frames are ev









[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept 









[?25h[?2026l[?2026h[?25l





- no partial frames are ever kept in the j



● Writing · 2.5s





[?25h[?2026l[?2026h[?25l















[?25h[?2026l[?2026h[?25l- `append` now retries up to 3 times on `EAGAIN` / `EBUSY`

- backoff is 2 ms, 8 ms, 32 ms — bounded, never user-visible

- a `WriteFailed` event is emitted only after the final attempt

- no partial frames are ever kept in the journal



● Writing · 2.5s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l```ts

as



● Writing · 2.5s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l

async appe



● Writing · 2.6s





[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event









[?25h[?2026l[?2026h[?25l

async append(event: Sessio









[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent):



● Writing · 2.7s





[?25h[?2026l[?2026h[?25l











[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise









[?25h[?2026l[?2026h[?25l

async append(event: SessionEvent): Promise<void> {









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (



● Writing · 2.8s



❯ check the 

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  for (let atte









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  for (let attempt = 0;









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  for (let attempt = 0; attempt



● Writing · 2.9s





[?25h[?2026l[?2026h[?25l













[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; at









[?25h[?2026l[?2026h[?25l



  for (let attempt = 0; attempt < 3; attempt++)









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    t



● Writing · 3.0s



❯ check the 

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[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

   



● Writing · 3.0s



❯ check the 

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      await



● Writing · 3.1s





[?25h[?2026l[?2026h[?25l







      await this.jo









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l







      await this.journal.wr









[?25h[?2026l[?2026h[?25l







      await this.journal.write(enco



● Writing · 3.2s





[?25h[?2026l[?2026h[?25l







      await this.journal.write(encode(event









[?25h[?2026l[?2026h[?25l

















[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

    



● Writing · 3.2s



❯ check the 

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      return



● Writing · 3.3s





[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } 



● Writing · 3.3s



❯ check the 

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[?25h[?2026l[?2026h[?25l











    } catch (e









[?25h[?2026l[?2026h[?25l```ts

async append(event: SessionEvent): Promise<void> {

  for (let attempt = 0; attempt < 3; attempt++) {

    try {

      await this.journal.write(encode(event));

      return;

    } catch (err) {

  



● Writing · 3.4s



❯ check the 

 main +2 −0  │  claude-sonnet  │  context 31%  │  $0.42[?25h[?2026l[?2026h[?25l













      if (









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      if (!isTrans









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      if (!isTransient(err



● Writing · 3.5s





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      if (!isTransient(err)) throw









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[?25h[?2026lmetrics written: /Users/simon-pierreboucher/Desktop/khaelor/prototypes/tui-spike/out/metrics-a.json