feat:新增对话结束后添加结束语句

src/utils/messageHandler.ts

@@ -393,6 +393,11 @@ async function handleUserMessageWithBackend(
               isComplete: true,
             });
 
+            // 发送任务完成消息
+            panel.webview.postMessage({
+              command: "taskComplete",
+            });
+
             // 发送系统通知 - AI 响应完成
             const notificationService = NotificationService.getInstance();
             notificationService.success(