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),

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

@@ -22,8 +22,8 @@ class ParticipantsListView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    String lastname(participant) =>
-        participant.displayName.toString().split(' ').last;
+    String lastname(GetParticipantsResponseObject participant) =>
+        participant.displayName.split(' ').last;
 
     final participants = participantsResponse.data.sorted((a, b) {
       final typeComparison = a.participantType.index.compareTo(

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

@@ -23,19 +23,18 @@ const int _sharedItemsPageSize = 20;
 /// handled separately (split into Bilder/Videos). `location`/`deckcard` are rich
 /// objects without a downloadable file, so they have no place in this view.
 const List<_SharedCategory> _sharedCategories = [
-  _SharedCategory('file', 'Dokumente', _SharedItemsLayout.list),
-  _SharedCategory('voice', 'Sprachnachrichten', _SharedItemsLayout.list),
-  _SharedCategory('audio', 'Audio', _SharedItemsLayout.list),
-  _SharedCategory('recording', 'Aufnahmen', _SharedItemsLayout.list),
-  _SharedCategory('other', 'Sonstiges', _SharedItemsLayout.list),
+  _SharedCategory('file', 'Dokumente'),
+  _SharedCategory('voice', 'Sprachnachrichten'),
+  _SharedCategory('audio', 'Audio'),
+  _SharedCategory('recording', 'Aufnahmen'),
+  _SharedCategory('other', 'Sonstiges'),
 ];
 
 class _SharedCategory {
   final String objectType;
   final String label;
-  final _SharedItemsLayout layout;
 
-  const _SharedCategory(this.objectType, this.label, this.layout);
+  const _SharedCategory(this.objectType, this.label);
 }
 
 bool _isVideoItem(GetChatResponseObject item) {
@@ -203,7 +202,7 @@ class _SharedItemsViewState extends State<SharedItemsView>
         _SharedItemsTab(
           token: widget.room.token,
           objectType: category.objectType,
-          layout: category.layout,
+          layout: _SharedItemsLayout.list,
           emptyLabel: 'Keine Einträge',
           initialPage: _seedFromOverview(raw),
         ),