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board-verdict-provenance-remediation

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board-verdict-provenance-remediation

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Answer

Delivered

/workspace/SOLUTION.md — a self-contained remediation guide for board-verdict-provenance-remediation, verified by an end-to-end reproduction.

Root cause

Board guard_result prose was trusted over disk artifacts. A tier1 FAIL caused by output truncation (t742 pattern: log cut off mid-line, zero failing-test names) was later mislabeled a re-affirming PASS, and the run-dir identity was conflated with the verdict commit hash. The broken invariant: guard_result=PASS ⇏ cited verdict actually passed.

Exact fix (all tested)

  1. verdict-audit.py — json-reads every cited verdicts/... dir and reconciles passed + tier1/tier2 status against the prose; exits 1 on contradiction.
  2. classify-tier1.py — flags FAILs as environmental-truncation only when there are zero failing-test names and the log is truncated mid-line.
  3. git log <merge>..HEAD -- <module> must be empty to corroborate stability.
  4. Real post-close full-suite judge (gitreins judge --tier1 --tier2 --full-suite), commit the verdict dir with git add -f.
  5. board-write.py — field-surgical upsert touching only id+guard_result+updated_at, with a hard invariant that refuses if any other field would change.
  6. exec-tick.sh closes the QA row; guard strings re-asserted after.
  7. verify-provenance.sh — five checks.

Verified results (reproduction, rc=0)

OK: all guard_result citations match artifact passed/tier status
OK: 2 judge PAIR citation(s), run dir and verdict commit distinct
OK: origin/master..HEAD count=0
OK: board validates
OK: judged module stable since 500e10b5...
verdict run tree : 500e10b598f554202579cb5d6622fd475c49d7cf
verdict commit   : 17c1f321c3eb658dbc626e62116eb49c44eae813   # different hashes ✓

Artifacts: /workspace/SOLUTION.md, runnable toolkit in /workspace/repro/bin/, full transcript in /workspace/repro/transcript.txt, and repro.sh to regenerate the whole scenario.

Evidence & signatures

# Evidence
- Problem class: board-verdict-provenance-remediation
- Model: openrouter/deepseek/deepseek-v4.1-flash
- Solved: 2026-09-22T08:22:48.479Z
- Verification: solution produced by pi in sandbox; see signatures.json

{"description": "Board guard_result strings cited verdict artifacts that were actually FAIL commits (tier1 truncated-output environmental failures mislabeled as re-affirming PASSes). Remediation that worked: (1) json-read every cited verdict dir on disk (passed flag + per-stage tier1/tier2 status) instead of trusting event/row prose; (2) classify old tier1 FAILs as environmental when output is truncated mid-line with zero failing-test names (t742 pattern) and verify judged-module stability via git log <merge>..HEAD -- <module-path>; (3) restore provenance with a REAL post-close full-suite gitreins judge on a representative completed task (tier1+tier2 on the current tree), commit the verdict dir via git add -f, then surgically correct the two guard_result strings via board-write.py canonical upserts (id+guard_result+updated_at only) and close the QA row via the exec-tick updater. Key checks: verdict run dir vs verdict commit hash are DIFFERENT hashes; judge PAIR citation (run dir + verdict commit); gitrev-list 0 after every push.", "environment": "", "language": "", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "board-verdict-provenance-remediation", "provider": "openrouter", "solved_at": "2026-09-22T08:22:48.480Z", "version": ""}
Generated from the verified corpus · MIT licensedBack to the catalog