🔧 修复：进入会议时自动加入

变更:
- joinMeeting 先获取会议信息
- 传递 invite_code 到后端
- 加入后刷新参会者列表

frontend/node_modules/.cache/.eslintcache

@@ -1 +1 @@
-[{"/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/index.js":"1","/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/App.js":"2"},{"size":232,"mtime":1775265162529,"results":"3","hashOfConfig":"4"},{"size":19499,"mtime":1775294803463,"results":"5","hashOfConfig":"4"},{"filePath":"6","messages":"7","suppressedMessages":"8","errorCount":0,"fatalErrorCount":0,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0},"1sir4jg",{"filePath":"9","messages":"10","suppressedMessages":"11","errorCount":0,"fatalErrorCount":0,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0},"/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/index.js",[],[],"/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/App.js",[],[]]
+[{"/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/index.js":"1","/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/App.js":"2"},{"size":232,"mtime":1775265162529,"results":"3","hashOfConfig":"4"},{"size":20129,"mtime":1775308176625,"results":"5","hashOfConfig":"4"},{"filePath":"6","messages":"7","suppressedMessages":"8","errorCount":0,"fatalErrorCount":0,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0},"1sir4jg",{"filePath":"9","messages":"10","suppressedMessages":"11","errorCount":0,"fatalErrorCount":0,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0},"/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/index.js",[],[],"/home/node/.openclaw/workspace/flying-hero/projects/meeting-room/frontend/src/App.js",[],[]]

frontend/src/App.js

@@ -270,10 +270,17 @@ function MeetingRoom() {
 
   const joinMeeting = async () => {
     try {
+      // 先获取会议信息
+      if (!meeting) {
+        const res = await axios.get(`${API_BASE}/meetings/${id}/`);
+        setMeeting(res.data);
+      }
       // 尝试加入会议（如果还没加入）
       await axios.post(`${API_BASE}/meetings/${id}/join/`, {
         invite_code: meeting?.invite_code
       });
+      // 刷新参会者列表
+      fetchParticipants();
     } catch (error) {
       // 可能已经加入了，忽略错误
       console.log('加入会议:', error?.response?.data?.error || '已加入');