1- 2026-10-30 P0 passed: contract written.2- 2026-10-30 P1: audit done; decision: keep holiday-spanning changes and extreme values (rules prescribe changes between consecutive available obs). Monday CI method: Welch two-sample t.3- 2026-10-30 P2/P3 passed; robustness keys added; P4 checks done, running gate.4- 2026-10-30 P4 passed (gate receipt 1); P5 report+claims written; running final gate.5- 2026-10-30 P5 passed; final gate PASSED (20261030T052143.167173Z).6