Log
- 2026-10-30 P0 started: read TASK.md, gate_spec.json, data/README.md.
- 2026-10-30 P1-P3 passed; results: unverifiable=[R3], n_verified=4. P4 running.
- 2026-10-30 P4 passed (gate run 1; only P5 items failing). P5: report & claims written, final gate.
- 2026-10-30 P5 passed; final gate PASSED. Task complete.