1- 2026-10-29 P0 passed: contract written.2- 2026-10-29 P1 passed: data audited (4 rows, valid, no exclusions).3- 2026-10-29 P2 passed (numerical baseline), P3 passed (analysis.py), P4 passed (repro identical, checks.md, gate run 1 failures only P5 artifacts). P5 report+claims written.4- 2026-10-29 P5 passed; final gate PASSED (20261030T035225.165032Z).5