better app initialization with bangs

app/lib/domain/services/app_initialization.dart

@@ -0,0 +1,54 @@
+import 'package:bang_navigator/features/about/data/repositories/package_info_repository.dart';
+import 'package:bang_navigator/features/bangs/domain/repositories/sync.dart';
+import 'package:bang_navigator/features/search_browser/domain/services/session.dart';
+import 'package:bang_navigator/features/settings/data/repositories/settings_repository.dart';
+import 'package:exceptions/exceptions.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'app_initialization.g.dart';
+
+@Riverpod(keepAlive: true)
+class AppInitializationService extends _$AppInitializationService {
+  /// Will de facto restart the app
+  Future<void> reinitialize() async {
+    ref.invalidateSelf();
+    return initialize();
+  }
+
+  Future<void> initialize() async {
+    state = await Result.fromAsync(() async {
+      final errors = <ErrorMessage>[];
+
+      //Ensure Package info is loaded
+      await ref.read(packageInfoProvider.future);
+
+      final syncResults = await ref
+          .read(bangSyncRepositoryProvider.notifier)
+          .syncAllBangGroups(syncInterval: const Duration(days: 7));
+
+      for (final MapEntry(value: result) in syncResults.entries) {
+        result.onFailure(errors.add);
+      }
+
+      final settings = await ref.read(settingsRepositoryProvider.future);
+      if (settings.incognitoMode) {
+        await ref.read(sessionServiceProvider.notifier).clearAllData();
+      }
+
+      if (settings.kagiSession case final String session) {
+        if (session.isNotEmpty) {
+          await ref
+              .read(sessionServiceProvider.notifier)
+              .setKagiSession(session);
+        }
+      }
+
+      return (initialized: true, errors: errors);
+    });
+  }
+
+  @override
+  Result<({bool initialized, List<ErrorMessage> errors})> build() {
+    return Result.success((initialized: false, errors: List.empty()));
+  }
+}

app/lib/domain/services/app_initialization.g.dart

@@ -0,0 +1,29 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'app_initialization.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$appInitializationServiceHash() =>
+    r'7b36828c2368c3b3a97b799dd8192854629c8379';
+
+/// See also [AppInitializationService].
+@ProviderFor(AppInitializationService)
+final appInitializationServiceProvider = NotifierProvider<
+    AppInitializationService,
+    Result<({bool initialized, List<ErrorMessage> errors})>>.internal(
+  AppInitializationService.new,
+  name: r'appInitializationServiceProvider',
+  debugGetCreateSourceHash: const bool.fromEnvironment('dart.vm.product')
+      ? null
+      : _$appInitializationServiceHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef _$AppInitializationService
+    = Notifier<Result<({bool initialized, List<ErrorMessage> errors})>>;
+// ignore_for_file: type=lint
+// ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member