- 2026-10-29 P0 passed: contract written.
- 2026-10-29 P1 passed: data audited, no issues.
- 2026-10-29 P2/P3 passed: closed form + 3 independent numerical maximisations (bounded scalar, 2M-point grid, 2-D SLSQP). Decision: SLSQP ftol 1e-15 -> 1e-12 (convergence flag).
- 2026-10-29 P4 checks all PASS; running gate.
- 2026-10-29 P4 passed; P5 report+claims written; running final gate.
- 2026-10-29 Final gate PASSED (receipt 20261030T035241.548272Z.json). Task complete.