{
  "cases": [
    {
      "input": "complete task request",
      "expected": "one draft"
    },
    {
      "input": "same record_id replay",
      "expected": "same draft, no duplicate"
    },
    {
      "input": "missing owner",
      "expected": "held with reason"
    },
    {
      "input": "unknown request_type",
      "expected": "held with reason"
    },
    {
      "input": "timeout",
      "expected": "visible failure, bounded idempotent retry"
    }
  ]
}