{
  "schema": "MAKNOW_FLR004_FIXTURES_v1",
  "cases": [
    {
      "id": "baseline_aligned",
      "contract_diff": "NONE",
      "observed_matches_vb": true,
      "consumer_dependency": "NONE",
      "drift_element": "NONE",
      "evidence_complete": true,
      "repair_applied": "NONE_REQUIRED",
      "verification_passed": true,
      "webhook": false
    },
    {
      "id": "required_input_break",
      "contract_diff": "OPTIONAL_TO_REQUIRED_REQUEST_FIELD",
      "observed_matches_vb": true,
      "consumer_dependency": "OMITS_FIELD",
      "drift_element": "request.required.customer_tier",
      "evidence_complete": true,
      "repair_applied": "COMPATIBILITY_DEFAULT_OR_COORDINATED_MIGRATION",
      "verification_passed": true,
      "webhook": false
    },
    {
      "id": "additive_ignored_field",
      "contract_diff": "ADD_OPTIONAL_RESPONSE_FIELD",
      "observed_matches_vb": true,
      "consumer_dependency": "IGNORES_UNKNOWN_FIELDS",
      "drift_element": "response.optional.trace_id",
      "evidence_complete": true,
      "repair_applied": "NONE_REQUIRED",
      "verification_passed": true,
      "webhook": false
    },
    {
      "id": "status_semantic_break",
      "contract_diff": "STATUS_429_TO_400",
      "observed_matches_vb": true,
      "consumer_dependency": "RETRIES_ONLY_ON_429",
      "drift_element": "response.status.rate_limit",
      "evidence_complete": true,
      "repair_applied": "RESTORE_429_OR_MIGRATE_RETRY_CONTRACT",
      "verification_passed": true,
      "webhook": false
    },
    {
      "id": "implementation_divergence_stale_docs",
      "contract_diff": "NONE",
      "observed_matches_vb": false,
      "consumer_dependency": "EXPECTS_DECLARED_200_SHAPE",
      "drift_element": "runtime.response.body",
      "evidence_complete": true,
      "repair_applied": "ALIGN_IMPLEMENTATION_OR_UPDATE_AUTHORITY",
      "verification_passed": true,
      "webhook": false
    },
    {
      "id": "enum_narrowing_break",
      "contract_diff": "REMOVE_ENUM_VALUE_LEGACY",
      "observed_matches_vb": true,
      "consumer_dependency": "SENDS_REMOVED_VALUE_LEGACY",
      "drift_element": "request.mode.enum",
      "evidence_complete": true,
      "repair_applied": "RESTORE_COMPATIBILITY_WINDOW_OR_MIGRATE_CONSUMER",
      "verification_passed": true,
      "webhook": false
    },
    {
      "id": "open_incomplete_evidence",
      "contract_diff": "STATUS_202_TO_200",
      "observed_matches_vb": null,
      "consumer_dependency": "UNKNOWN",
      "drift_element": "response.status.acceptance",
      "evidence_complete": false,
      "repair_applied": "NONE",
      "verification_passed": false,
      "webhook": false
    },
    {
      "id": "transfer_webhook_callback",
      "contract_diff": "CALLBACK_OPTIONAL_TO_REQUIRED_FIELD",
      "observed_matches_vb": true,
      "consumer_dependency": "RECEIVER_OMITS_REQUIRED_ACK_TOKEN",
      "drift_element": "webhook.callback.ack_token",
      "evidence_complete": true,
      "repair_applied": "VERSION_CALLBACK_OR_COORDINATED_RECEIVER_MIGRATION",
      "verification_passed": true,
      "webhook": true
    }
  ]
}