# Log
- 2026-10-30 P0: read TASK, wrote contract. passed.
- 2026-10-30 P1: audited data, clean; no exclusions. passed.
- 2026-10-30 P2: baseline iid OLS reproduces memo (t=2.27, p=0.024). passed.
- 2026-10-30 Decision: HAC bandwidth = floor(Andrews 1991 AR(1) plug-in for Bartlett on slope score) = 8; no small-sample df correction; normal reference. Sensitivity over lags reported.
- 2026-10-30 P3: analysis.py written. passed.
- 2026-10-30 P4: reproducibility + consistency checks pass; running gate.
- 2026-10-30 P4: gate receipt 20261030T040500.812036Z (only phase-status failure). passed.
- 2026-10-30 P5: report, claims written; final gate run follows.
- 2026-10-30 Final gate 20261030T040506.981723Z PASSED. Task complete.