1- 2026-10-30 P0 passed: contract written.2- 2026-10-30 P1 passed: design audited, no issues.3- 2026-10-30 P2/P3 passed: analysis.py run; bias_mc=-0.1237 vs analytical -0.1133. Decision: formula n=30 headline, n-1 sensitivity.4- 2026-10-30 P4 passed: re-run identical, checks PASS, gate receipt 20261030T051305.282353Z.5- 2026-10-30 P5: report and claims written; final gate run.6- 2026-10-30 P5 passed: final gate PASSED, receipt 20261030T051338.942963Z. Task complete.7