experiment-audit

Audit the experimental methodology integrity for a specific claim (Checks A–F: GT provenance, score normalization, result-file existence, dead code, scope, eval-type). Uses cross-model review (external LLM reviewer via llm-chat MCP). The output overall_verdict (PASS/WARN/FAIL) is THIS claim's verdict — i.e., whether the claim's experimental process is methodologically sound. Does NOT judge whether the numbers…