fix:user 消息重复

web/src/App.tsx

@@ -171,13 +171,7 @@ function App() {
 
   const handleExitSubAgentView = useCallback(() => {
     exitSubAgentView()
-    // Reload current topic messages
-    if (selectedTopic) {
-      const cmd: Command = { type: 'load_topic', topic_id: selectedTopic }
-      handleCommand(cmd)
-      sendMessage({ type: 'command', payload: JSON.stringify(cmd) })
-    }
-  }, [exitSubAgentView, selectedTopic, handleCommand, sendMessage])
+  }, [exitSubAgentView])
 
   const chatMessages = useMemo(() => {
     const result: ChatMessage[] = []