- 2026-10-30 P0 passed: contract written.
- 2026-10-30 P1 passed: checksums match README; one missing UNRATE (2025-10) outside window.
- 2026-10-30 P2 passed: baseline se_iid (conventional OLS) computed within analysis.py.
- 2026-10-30 Decision: HAC lags = floor(4(T/100)^(2/9)) = 4 (also = floor(0.75 T^(1/3))); no df correction; normal critical values.
- 2026-10-30 P3 passed: analysis.py written and run.
- 2026-10-30 P4: clean re-run identical; checks.md written; running gate.
- 2026-10-30 P5: report and claims written; final gate run.
- 2026-10-30 Final gate PASSED; all phases passed.