{
  "kind": "callback_request",
  "expect": "invalid",
  "expect_error": "receipt.emitted is a notification event and must not carry an idempotency_key",
  "description": "receipt.emitted is a notification event; carrying an idempotency_key implies recursion semantics and must be refused",
  "data": {
    "schema_version": "lifeloop.v0.2",
    "event": "receipt.emitted",
    "event_id": "evt-1",
    "adapter_id": "codex",
    "adapter_version": "0.1.0",
    "integration_mode": "native_hook",
    "invocation_id": "inv-1",
    "idempotency_key": "idem-1"
  }
}
