test(backend): 更新后端测试文件

backend/tests/unit/v1/agent/test_service.py

@@ -355,7 +355,7 @@ async def test_get_history_snapshot_filters_out_tool_messages() -> None:
                         "content": "今天共有 3 条日程。",
                         "metadata": {
                             "run_id": "run-1",
-                            "worker_agent_output": {
+                            "agent_output": {
                                 "status": "success",
                                 "answer": "今天共有 3 条日程。",
                                 "key_points": [],

backend/tests/unit/v1/agent/test_utils.py

@@ -34,9 +34,7 @@ def test_convert_message_to_history_uses_ui_schema_key_for_assistant_message() -
     message = _FakeMessage(
         role="assistant",
         metadata={
-            "worker_agent_output": {
-                "ui_schema": {"version": "2.0", "root": {"type": "stack"}}
-            }
+            "agent_output": {"ui_schema": {"version": "2.0", "root": {"type": "stack"}}}
         },
     )