merge: gộp thành công phần code sửa trước từ stash

frontend/src/pages/MemberDashboard.tsx

@@ -538,12 +538,6 @@ export const MemberDashboard: React.FC<MemberDashboardProps> = ({
   useEffect(() => {
     if (!user?.id) return;
 
-<<<<<<< Updated upstream
-    const handleMessageReceived = (e: Event) => {
-      const message = (e as CustomEvent).detail;
-      // If we are actively chatting with the sender of this message
-      if (activeChatUser && (message.senderId === activeChatUser.id || message.receiverId === activeChatUser.id)) {
-=======
     // Connect to WebSocket: absolute URL on native, relative (Vite proxy) on web
     const socket = Capacitor.isNativePlatform()
       ? io(BACKEND_URL)
@@ -559,7 +553,6 @@ export const MemberDashboard: React.FC<MemberDashboardProps> = ({
       // Check against window-global activeChatUserId so stale closure doesn't block updates
       const activeChatUserId = (window as any).activeChatUserId;
       if (activeChatUserId && (message.senderId === activeChatUserId || message.receiverId === activeChatUserId)) {
->>>>>>> Stashed changes
         setChatMessages(prev => [...prev, message]);
       } else {
         // Add to unread states