# Log

• 2026-10-30 P0: read TASK.md, wrote contract. P0 passed.
• 2026-10-30 P1: audited data; found aggregate good1 mismatch (14 vs 12); decided to use row sums. P1 passed.
• 2026-10-30 P2: baseline = independent Brent root of z1(p) (price_ratio_numerical=0.875). P2 passed.
• 2026-10-30 P3: analysis.py implemented (no randomness, seed null). P3 passed.
• 2026-10-30 P4: re-run byte-identical; consistency checks in checks.md.
• 2026-10-30 P4 passed (gate 20261030T041339 only non-terminal-phase failure). P5: report/claims written; final gate 20261030T041344.199251Z passed.