1- 2026-10-30 P0 passed: contract written.2- 2026-10-30 P1 passed: design audited, no issues; decision: analytical formula uses n=30, n-1 reported as sensitivity.3- 2026-10-30 P2/P3 passed: analysis.py written and run (seed 20261029).4- 2026-10-30 P4 passed: reproducibility and consistency checks recorded in checks.md.5- 2026-10-30 P5 passed: report.md and claims.json written.6