# Log

• 2026-10-30 04:10Z P0 passed: contract written.
• 2026-10-30 04:10Z P1 passed: data audit; SHA matches; README discrepancy (1992-01 change values present) noted; COVID outliers retained.
• 2026-10-30 04:12Z P2 passed: baselines naive and expanding mean computed in analysis.py (same evaluation rule).
• 2026-10-30 04:12Z P3 passed: ridge implemented exactly as specified; no randomness (random_seed null). Decision: add supplementary DM (HLN) tests for Uncertainty section.
• 2026-10-30 04:15Z P4: verification checks all pass (see checks.md); running gate.
• 2026-10-30 04:20Z P4 passed (gate receipt 20261030T041144.120435Z, only P5-artifact failures). P5: report and claims written; running final gate.
• 2026-10-30 04:22Z P5 passed; final gate PASSED (receipt 20261030T041216.641142Z). Task complete.