[
  {
    "name": "service without thread context",
    "senderThreadId": null,
    "initiator": "user"
  },
  {
    "name": "human CLI without thread context",
    "senderThreadId": null,
    "initiator": "user"
  },
  {
    "name": "retry",
    "senderThreadId": null,
    "initiator": "system"
  }
]
Observed fallback confirmed; live routing and persistence were not exercised.