implemented chat long-polling and optimistic updates, centralized notification management, optimized avatar caching

lib/view/pages/talk/widgets/chat_tile.dart

@@ -7,9 +7,10 @@ import '../../../../api/marianumcloud/talk/actions/talk_actions.dart';
 import '../../../../api/marianumcloud/talk/chat/rich_object_string_processor.dart';
 import '../../../../api/marianumcloud/talk/room/get_room_response.dart';
 import '../../../../api/marianumcloud/talk/set_read_marker/set_read_marker.dart';
-import '../../../../api/marianumcloud/talk/set_read_marker/set_read_marker_params.dart';
 import '../../../../extensions/date_time.dart';
 import '../../../../model/account_data.dart';
+import '../../../../notification/notification_tasks.dart';
+import '../../../../routing/app_routes.dart';
 import '../../../../state/app/modules/chat/bloc/chat_bloc.dart';
 import '../../../../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
 import '../../../../widget/async_action_button.dart';
@@ -17,7 +18,6 @@ import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/debug/debug_tile.dart';
 import '../../../../widget/details_bottom_sheet.dart';
 import '../../../../widget/user_avatar.dart';
-import '../chat_view.dart';
 import '../talk_navigator.dart';
 
 class ChatTile extends StatefulWidget {
@@ -61,13 +61,11 @@ class _ChatTileState extends State<ChatTile> {
   void _refreshList() => context.read<ChatListBloc>().refresh();
 
   Future<void> _setCurrentAsRead() async {
-    await SetReadMarker(
-      widget.data.token,
-      true,
-      setReadMarkerParams: SetReadMarkerParams(
-        lastReadMessage: widget.data.lastMessage.id,
-      ),
-    ).run();
+    final token = widget.data.token;
+    final lastId = widget.data.lastMessage.id;
+    context.read<ChatListBloc>().markRoomAsRead(token, lastId);
+    unawaited(NotificationTasks.clearNotificationsForChat(token));
+    await context.read<ChatBloc>().sendServerReadMarker(token, lastId);
     if (!mounted) return;
     _refreshList();
   }
@@ -154,18 +152,17 @@ class _ChatTileState extends State<ChatTile> {
           return;
         }
         if (selfUsername == null) return;
-        unawaited(_setCurrentAsRead());
-        final view = ChatView(
+        // openChatView is the single entry point for opening a chat —
+        // it handles optimistic mark-as-read, tray cleanup, push, and
+        // setToken in one place so the notification-tap path gets the
+        // same treatment as a tile tap.
+        AppRoutes.openChatView(
+          context,
           room: widget.data,
           selfId: selfUsername!,
           avatar: circleAvatar,
-        );
-        TalkNavigator.pushSplitView(
-          context,
-          view,
           overrideToSingleSubScreen: true,
         );
-        context.read<ChatBloc>().setToken(widget.data.token);
       },
       onLongPress: () {
         if (widget.disableContextActions) return;