{
  "invalid_run_id": "20260905T143758Z-custom-workflow-eval-small",
  "replacement_run_id": "20260905T152000Z-bf16-three-arm-corrected",
  "reason": "Six competitor rows inherited the CIRU model hash because their per-row hash was null. Numeric scores are unchanged. Exclude the original run from comparative queries; use the replacement run. Original append-only records are preserved.",
  "affected_profiles": [
    "agention-laurent",
    "unsloth-recommended"
  ],
  "created_utc": "2026-09-05T15:20:00Z"
}