1- 2026-10-30 P0 passed: contract written.2- 2026-10-30 P1 passed (audit); P2 baseline (se_asymptotic, analytical bias, naive zero-bias); P3 analysis.py run; P4 reproducibility identical.3- 2026-10-30 P4 gate run (20261030T051437.850545Z.json) only ledger failure; P5 report/claims written; final gate (20261030T051446.119747Z.json) passed. All phases passed.4