{
  "schema": "gentle-ai.review-integration.failure/v1",
  "contract": "gentle-ai.review-integration/v1",
  "operation": "review.validate",
  "phase": "preflight",
  "code": "gate_scope_changed",
  "message": "The review delivery gate denied the current target.",
  "mutation_outcome": "not_started",
  "authority_applicability": "current_target",
  "retry_safe": false,
  "replayability": "manual_action_required",
  "lineage_id": "review-failure-fixture",
  "required_inputs": [
    "predecessor_lineage_id",
    "expected_predecessor_revision",
    "successor_lineage_id",
    "disposition",
    "reason",
    "actor"
  ],
  "next_action": "explicit-maintainer-action",
  "context": {
    "scope_change": {
      "expected": {
        "candidate_tree": "2222222222222222222222222222222222222222",
        "paths_digest": "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
      },
      "actual": {
        "candidate_tree": "3333333333333333333333333333333333333333",
        "paths_digest": "sha256:cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
      },
      "differing_path_count": 1,
      "differing_paths_digest": "sha256:7777777777777777777777777777777777777777777777777777777777777777",
      "predecessor_lineage_id": "review-failure-fixture",
      "predecessor_revision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
      "recovery_operation": "review.recover",
      "recovery_required_inputs": [
        "predecessor_lineage_id",
        "expected_predecessor_revision",
        "successor_lineage_id",
        "disposition",
        "reason",
        "actor"
      ]
    }
  }
}