{
  "schema": "cohort-checker-implementation-amendment/1",
  "failed_stage": "artifacts/validation_cohort_verification_20261014",
  "failure": "Checker raw catalogue parser attempted float on an empty distance; worker already excludes nonfinite/missing distance by frozen parent definition",
  "predicates_or_outputs_changed": false,
  "original_registration_preserved": true,
  "replacement_checker": "research/verify_validation_cohort2_20261014.py",
  "replacement_checker_sha256": "45a9bf26b6d88805535a549efd0cc2a8360ced12d7b1a4bab3dca4c20d59870f",
  "stage": "artifacts/validation_cohort_verification2_20261014",
  "limits": {
    "seconds": 600,
    "mib": 1,
    "sampled_rss_mib": 256,
    "free_gib": 5
  }
}