respect output persistence in background agent replies

app/agent/__init__.py

@@ -643,10 +643,11 @@ class MoviePilotAgent:
                     and not self._tool_context.get("user_reply_sent")
                 ):
                     if self.is_background:
-                        # 后台任务仅广播最终回复，带标题
-                        await self.send_agent_message(
-                            final_text, title="MoviePilot助手"
-                        )
+                        if self.persist_output_message:
+                            # 后台任务仅广播最终回复，带标题
+                            await self.send_agent_message(
+                                final_text, title="MoviePilot助手"
+                            )
                     else:
                         # 非流式渠道：发送最终回复
                         await self.send_agent_message(final_text)

tests/test_agent_background_output.py

@@ -0,0 +1,54 @@
+import unittest
+from types import SimpleNamespace
+from unittest.mock import AsyncMock, patch
+
+from langchain_core.messages import AIMessage
+
+from app.agent import MoviePilotAgent
+from app.agent.memory import memory_manager
+
+
+class _FakeGraphState:
+    def __init__(self, messages):
+        self.values = {"messages": messages}
+
+
+class _FakeAgent:
+    def __init__(self, messages):
+        self._messages = messages
+
+    async def ainvoke(self, _payload, config=None):
+        return None
+
+    def get_state(self, _config):
+        return _FakeGraphState(self._messages)
+
+
+class AgentBackgroundOutputTest(unittest.IsolatedAsyncioTestCase):
+    async def test_background_non_streaming_skips_send_when_output_persistence_disabled(self):
+        agent = MoviePilotAgent(session_id="bg-test", user_id="system")
+        agent.channel = None
+        agent.source = None
+        agent.suppress_user_reply = False
+        agent.persist_output_message = False
+        agent._tool_context = {"user_reply_sent": False}
+        agent._streamed_output = ""
+        agent.stream_handler = SimpleNamespace(
+            stop_streaming=AsyncMock(return_value=(False, ""))
+        )
+        agent._should_stream = lambda: False
+        agent._create_agent = lambda streaming=False: _FakeAgent(
+            [AIMessage(content="后台结果")]
+        )
+        agent.send_agent_message = AsyncMock()
+
+        with patch.object(memory_manager, "save_agent_messages") as save_messages:
+            await agent._execute_agent([])
+
+        agent.send_agent_message.assert_not_awaited()
+        save_messages.assert_called_once()
+        self.assertEqual("后台结果", agent._streamed_output)
+
+
+if __name__ == "__main__":
+    unittest.main()