# Log
- 2026-10-30 P0 passed: contract written.
- 2026-10-30 P1 passed: data clean, 50x40 balanced panel, no exclusions.
- 2026-10-30 P2/P3 passed: decision CR1 clustered SE with t(G-1) CI.
- 2026-10-30 P4 passed: rerun identical, all checks pass.
- 2026-10-30 P5 passed: report and claims written.