added guardian letters with chat and multiple answer functionalities

lib/main.dart

@@ -28,6 +28,7 @@ import 'auth_link/guardian_link_listener.dart';
 import 'background/widget_background_task.dart';
 import 'firebase_options.dart';
 import 'notification/notification_service.dart';
+import 'push/notification_permission_prompt.dart';
 import 'push/push_message_handler.dart';
 import 'push/push_registration.dart';
 import 'push/push_registration_store.dart';
@@ -43,6 +44,7 @@ import 'state/app/modules/chat/bloc/chat_bloc.dart';
 import 'state/app/modules/chat_list/bloc/chat_list_bloc.dart';
 import 'state/app/modules/children/child_selection_cubit.dart';
 import 'state/app/modules/nextcloud_capabilities/bloc/nextcloud_capabilities_cubit.dart';
+import 'state/app/modules/parent_letters/bloc/parent_letters_bloc.dart';
 import 'state/app/modules/settings/bloc/settings_cubit.dart';
 import 'state/app/modules/timetable/primary/primary_timetable_scope.dart';
 import 'storage/hydrated_storage_bootstrap.dart';
@@ -256,6 +258,7 @@ Future<void> main() async {
           create: (ctx) => ChatBloc(chatListBloc: ctx.read<ChatListBloc>()),
         ),
         BlocProvider<ChildSelectionCubit>(create: (_) => ChildSelectionCubit()),
+        BlocProvider<ParentLettersBloc>(create: (_) => ParentLettersBloc()),
       ],
       child: const PrimaryTimetableScope(child: Main()),
     ),
@@ -327,16 +330,27 @@ class _MainState extends State<Main> {
       capabilitiesCubit.load().then((_) {
         if (!mounted) return;
         _syncPush(settingsCubit, capabilitiesCubit);
+        _promptGuardianNotifications();
       }),
     );
     unawaited(context.read<NextcloudCapabilitiesCubit>().load());
   }
 
+  /// Waits for the post-login splash so the dialog never covers it; the
+  /// splash's completion calls this again.
+  void _promptGuardianNotifications() {
+    if (_showPostLoginSplash) return;
+    final overlayContext = AppRoutes.overlayContext;
+    if (overlayContext == null) return;
+    unawaited(maybePromptGuardianLoginNotifications(overlayContext));
+  }
+
   /// Warms the chat list and files root in the background so the first screen
   /// render hits populated data. The timetable needs no warm-up:
   /// PrimaryTimetableScope creates a freshly loading bloc per account.
   void _prefetchBaseData(BuildContext context) {
     unawaited(context.read<ChatListBloc>().refresh(silent: true));
+    unawaited(context.read<ParentLettersBloc>().refresh(silent: true));
     if (SessionManager().hasNextcloud) {
       unawaited(ListFilesCache.prefetchRootListing());
     }
@@ -482,6 +496,7 @@ class _MainState extends State<Main> {
                     final childSelectionCubit = context
                         .read<ChildSelectionCubit>();
                     final chatListBloc = context.read<ChatListBloc>();
+                    final parentLettersBloc = context.read<ParentLettersBloc>();
                     final chatBloc = context.read<ChatBloc>();
                     final nextcloudCapabilitiesCubit = context
                         .read<NextcloudCapabilitiesCubit>();
@@ -495,6 +510,7 @@ class _MainState extends State<Main> {
                           settingsCubit: settingsCubit,
                           childSelectionCubit: childSelectionCubit,
                           chatListBloc: chatListBloc,
+                          parentLettersBloc: parentLettersBloc,
                           chatBloc: chatBloc,
                           breakerBloc: breakerBloc,
                           capabilitiesCubit: capabilitiesCubit,
@@ -515,9 +531,10 @@ class _MainState extends State<Main> {
                             if (_showPostLoginSplash)
                               PostLoginSplash(
                                 key: const ValueKey('post-login-splash'),
-                                onComplete: () => setState(
-                                  () => _showPostLoginSplash = false,
-                                ),
+                                onComplete: () {
+                                  setState(() => _showPostLoginSplash = false);
+                                  _promptGuardianNotifications();
+                                },
                               ),
                           ],
                         );
@@ -541,6 +558,7 @@ Future<void> _wipeUserState({
   required SettingsCubit settingsCubit,
   required ChildSelectionCubit childSelectionCubit,
   required ChatListBloc chatListBloc,
+  required ParentLettersBloc parentLettersBloc,
   required ChatBloc chatBloc,
   required BreakerBloc breakerBloc,
   required CapabilitiesCubit capabilitiesCubit,
@@ -558,6 +576,7 @@ Future<void> _wipeUserState({
     await Future.wait([
       childSelectionCubit.reset(),
       chatListBloc.reset(),
+      parentLettersBloc.reset(),
       chatBloc.reset(),
       breakerBloc.reset(),
       capabilitiesCubit.reset(),