added talk notification levels for chats

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

@@ -6,6 +6,7 @@ import '../../../../api/marianumcloud/talk/get_participants/get_participants_cac
 import '../../../../api/marianumcloud/talk/get_participants/get_participants_response.dart';
 import '../../../../api/marianumcloud/talk/get_shared_items/get_shared_items_overview_response.dart';
 import '../../../../api/marianumcloud/talk/room/get_room_response.dart';
+import '../../../../api/marianumcloud/talk/room/notification_level.dart';
 import '../../../../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
 import '../../../../widget/app_progress_indicator.dart';
 import '../../../../widget/async_action_button.dart';
@@ -14,6 +15,7 @@ import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/large_profile_picture_view.dart';
 import '../../../../widget/user_avatar.dart';
 import '../talk_navigator.dart';
+import '../widgets/notification_level_sheet.dart';
 import 'participants_list_view.dart';
 import 'shared_items_view.dart';
 
@@ -29,6 +31,7 @@ class _ChatInfoState extends State<ChatInfo> {
   GetParticipantsResponse? participants;
   GetSharedItemsOverviewResponse? _sharesOverview;
   late bool _isFavorite;
+  late NotificationLevel _notificationLevel;
   int _avatarVersion = 0;
   bool _avatarBusy = false;
 
@@ -36,6 +39,7 @@ class _ChatInfoState extends State<ChatInfo> {
   void initState() {
     super.initState();
     _isFavorite = widget.room.isFavorite;
+    _notificationLevel = widget.room.effectiveNotificationLevel;
     GetParticipantsCache(
       chatToken: widget.room.token,
       onUpdate: (GetParticipantsResponse data) {
@@ -67,6 +71,16 @@ class _ChatInfoState extends State<ChatInfo> {
     _refreshList();
   }
 
+  Future<void> _editNotificationLevel() async {
+    final level = await showNotificationLevelSheet(
+      context,
+      widget.room,
+      current: _notificationLevel,
+    );
+    if (level == null || !mounted) return;
+    setState(() => _notificationLevel = level);
+  }
+
   Future<void> _confirmLeave() async {
     final closed = await showDialog<bool>(
       context: context,
@@ -243,6 +257,11 @@ class _ChatInfoState extends State<ChatInfo> {
               title: const Text('Zu Favoriten hinzufügen'),
               onPressed: _toggleFavorite,
             ),
+          NotificationLevelTile(
+            level: _notificationLevel,
+            trailing: const Icon(Icons.arrow_right),
+            onTap: _editNotificationLevel,
+          ),
           const Divider(),
           ListTile(
             leading: Icon(