Advanced chat management via UI

frontend/lib/chat_screen.dart

@@ -33,6 +33,7 @@ class ChatScreen extends StatefulWidget {
 }
 
 class _ChatScreenState extends State<ChatScreen> {
+  String? _title;
   List<Message> _messages = [];
   final TextEditingController _textController = TextEditingController();
   StreamSubscription? _chatSubscription;
@@ -40,7 +41,7 @@ class _ChatScreenState extends State<ChatScreen> {
   @override
   void initState() {
     super.initState();
-    _loadInitialMessages();
+    _loadInitialData();
     _chatSubscription = Backend.chatMessages(widget.chatId).listen((data) {
       final message = Message(sender: data['sender'], text: data['content']);
       if (!message.isFromUser) {
@@ -55,10 +56,12 @@ class _ChatScreenState extends State<ChatScreen> {
     super.dispose();
   }
 
-  Future<void> _loadInitialMessages() async {
+  Future<void> _loadInitialData() async {
+    final chatInfo = (await Backend.getChat(widget.chatId))!;
     final initialMessages = await ChatScreen.getChatMessages(widget.chatId);
     setState(() {
       _messages.addAll(initialMessages);
+      _title = chatInfo.name;
     });
   }
 
@@ -100,7 +103,7 @@ class _ChatScreenState extends State<ChatScreen> {
 
     return Scaffold(
       appBar: AppBar(
-        title: Text('Chat Room ${widget.chatId}'),
+        title: Text(_title ?? 'Chat Room ${widget.chatId}'),
         actions: [
           IconButton(icon: Icon(Icons.settings), onPressed: () {
             Navigator.push(context, MaterialPageRoute(builder: (_) => AppMenu()));