feat: sync latest ARR implementation

agent_integration/client.py

@@ -142,6 +142,7 @@ class OpenAgentAPIClient:
         *,
         idempotency_key: Optional[str] = None,
         metadata: Optional[Dict[str, Any]] = None,
+        include_trace: bool = False,
     ) -> Iterator[OpenAgentEvent]:
         payload = self._message_payload(message, idempotency_key=idempotency_key, metadata=metadata)
         path = f"/api/open/agent-sessions/{self._path_segment(session_id)}/messages/stream"
@@ -149,6 +150,7 @@ class OpenAgentAPIClient:
             with self._client.stream(
                 "POST",
                 self._url(path),
+                params={"include_trace": "true"} if include_trace else None,
                 headers=self._headers(include_csrf=True, accept="text/event-stream"),
                 json=payload,
                 timeout=self.timeout,
@@ -332,4 +334,3 @@ class OpenAgentAPIClient:
             response_text,
             request_id=request_id,
         )
-