simplified code across the app and consolidated duplicated helpers

lib/view/pages/talk/details/chat_info.dart

@@ -16,6 +16,7 @@ import '../../../../widget/large_profile_picture_view.dart';
 import '../../../../widget/user_avatar.dart';
 import '../talk_navigator.dart';
 import '../widgets/notification_level_sheet.dart';
+import '../widgets/room_actions.dart';
 import 'participants_list_view.dart';
 import 'shared_items_view.dart';
 
@@ -82,19 +83,8 @@ class _ChatInfoState extends State<ChatInfo> {
   }
 
   Future<void> _confirmLeave() async {
-    final closed = await showDialog<bool>(
-      context: context,
-      builder: (_) => ConfirmDialog(
-        title: 'Talk-Chat verlassen',
-        content: 'Du benötigst ggf. eine Einladung um erneut beizutreten.',
-        confirmButton: 'Verlassen',
-        onConfirmAsync: () async {
-          await LeaveRoom(widget.room.token).run();
-          if (mounted) _refreshList();
-        },
-      ),
-    );
-    if (closed == true && mounted) Navigator.of(context).pop();
+    final left = await confirmLeaveRoom(context, widget.room.token);
+    if (left && mounted) Navigator.of(context).pop();
   }
 
   // Spreed's POST /room/{token}/avatar requires moderator rights and rejects
@@ -245,18 +235,10 @@ class _ChatInfoState extends State<ChatInfo> {
               SharedItemsView(widget.room, overview: _sharesOverview),
             ),
           ),
-          if (_isFavorite)
-            AsyncListTile(
-              leading: const Icon(Icons.stars_outlined),
-              title: const Text('Von Favoriten entfernen'),
-              onPressed: _toggleFavorite,
-            )
-          else
-            AsyncListTile(
-              leading: const Icon(Icons.star_outline),
-              title: const Text('Zu Favoriten hinzufügen'),
-              onPressed: _toggleFavorite,
-            ),
+          FavoriteToggleTile(
+            isFavorite: _isFavorite,
+            onPressed: _toggleFavorite,
+          ),
           NotificationLevelTile(
             level: _notificationLevel,
             trailing: const Icon(Icons.arrow_right),