语法错误已修复

基础互动功能已实现

client/mobile/pages_classroom.tsx

@@ -192,8 +192,6 @@ export const ClassroomPage = () => {
         } catch (err) {
           console.error('解析静音指令失败', err);
         }
-      } else {
-        showMessage(`收到消息: ${msg.data}`);
       } else if (msg.type === 88891) { // 举手消息
         try {
           const data = JSON.parse(msg.data) as InteractionMessage;