{
  "spec_version": "0.2.1",
  "kind": "result",
  "action": "documents.decide",
  "contract_revision": "1",
  "status": "blocked",
  "context": {
    "scope_id": "scope_demo",
    "resource_id": "doc_contract_001",
    "revision": 8
  },
  "error": {
    "code": "revision_conflict",
    "message": "文档修订已改变，需核对差异",
    "resolution": {
      "kind": "read",
      "action": "documents.get"
    }
  }
}