refactored data providers with centralized cache resolution, unified UI using custom dialogs and bottom sheets, and enhanced network error handling for Dio and TLS errors

lib/state/app/modules/chat_list/data_provider/chat_list_data_provider.dart

@@ -2,26 +2,22 @@ import '../../../../../api/marianumcloud/talk/create_room/create_room.dart';
 import '../../../../../api/marianumcloud/talk/create_room/create_room_params.dart';
 import '../../../../../api/marianumcloud/talk/room/get_room_cache.dart';
 import '../../../../../api/marianumcloud/talk/room/get_room_response.dart';
+import '../../../../../api/request_cache.dart';
 
 class ChatListDataProvider {
   Future<GetRoomResponse> getRooms({
     void Function(Object)? onError,
     bool renew = false,
-  }) async {
-    GetRoomResponse? latest;
-    Object? capturedError;
-    final cache = GetRoomCache(
-      renew: renew,
-      onUpdate: (data) => latest = data,
-      onError: (e) {
-        capturedError = e;
-        onError?.call(e);
-      },
-    );
-    await cache.ready;
-    if (latest != null) return latest!;
-    throw capturedError ?? Exception('No data and no error from getRooms');
-  }
+  }) =>
+      resolveFromCache<GetRoomResponse>(
+        (onUpdate, onError) => GetRoomCache(
+          renew: renew,
+          onUpdate: onUpdate,
+          onError: onError,
+        ),
+        onError: onError,
+        operationName: 'getRooms',
+      );
 
   Future<void> createDirectRoom(String invite) =>
       CreateRoom(CreateRoomParams(roomType: 1, invite: invite)).run();