{
  "schema": "homeboy/agent-task-outcome/v1",
  "task_id": "task-contract-missing-artifact",
  "status": "provider_error",
  "summary": "Required artifact answer_packet was not produced.",
  "failure_classification": "provider",
  "diagnostics": [
    {
      "class": "missing_required_artifact",
      "message": "Required artifact answer_packet was not produced.",
      "data": {
        "missing": ["answer_packet"]
      }
    }
  ],
  "metadata": {
    "expected_artifacts": ["answer_packet"]
  }
}
