feat: enhance API client and add club overview functionality

- Added dependencies for dio, flutter_secure_storage, and shared_preferences.
- Created ApiClient for handling API requests with token management.
- Implemented AuthRepository for authentication operations.
- Developed TokenStorage for secure token storage.
- Added AppSession to manage user session state and club selection.
- Created password reset pages for requesting and saving new passwords.
- Implemented ClubSelectionPage for selecting an active club.
- Updated widget tests to reflect new login flow and UI changes.
- Documented progress in FLUTTER_DESKTOP_APP_PLAN.md.

backend/desktop-app/.github/workflows/quality.yml

@@ -0,0 +1,27 @@
+name: Flutter quality
+
+on:
+  pull_request:
+    paths:
+      - '**.dart'
+      - 'pubspec.yaml'
+      - 'pubspec.lock'
+      - '.github/workflows/quality.yml'
+  push:
+    branches: [main]
+
+jobs:
+  analyze-and-test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: desktop-app
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+      - run: flutter pub get
+      - run: dart format --output=none --set-exit-if-changed .
+      - run: flutter analyze
+      - run: flutter test

backend/desktop-app/.gitignore

@@ -0,0 +1,45 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+/coverage/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

backend/desktop-app/.metadata

@@ -0,0 +1,36 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "058e0af2c2b57e369d905a03ac9748b0ebf543c6"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+      base_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+    - platform: linux
+      create_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+      base_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+    - platform: macos
+      create_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+      base_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+    - platform: windows
+      create_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+      base_revision: 058e0af2c2b57e369d905a03ac9748b0ebf543c6
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

backend/desktop-app/README.md

@@ -0,0 +1,38 @@
+# TT-Tagebuch Desktop
+
+Eigenständige Flutter-/Dart-Desktop-App für Windows, macOS und Linux. Sie ist
+keine WebView: Die Oberfläche wird vollständig mit Flutter gebaut und nutzt
+die bestehende TT-Tagebuch-API.
+
+## Voraussetzungen
+
+- Flutter stable
+- Linux: CMake, Ninja, GTK-3-Entwicklungsbibliotheken und ein C++-Compiler
+- Windows: Visual Studio mit dem Workload „Desktop development with C++“
+- macOS: Xcode
+
+## Starten
+
+```bash
+flutter pub get
+flutter run -d linux
+```
+
+Für die lokale API wird standardmäßig `http://localhost:3005/api` verwendet.
+Eine abweichende Umgebung wird ausschließlich beim Build gesetzt:
+
+```bash
+flutter run -d linux \
+  --dart-define=APP_ENV=staging \
+  --dart-define=API_BASE_URL=https://staging.tt-tagebuch.de/api
+```
+
+## Qualität
+
+```bash
+dart format --output=none --set-exit-if-changed .
+flutter analyze
+flutter test
+```
+
+Zugangsdaten und JWTs gehören nie in Logs, Quellcode oder Build-Konfiguration.

backend/desktop-app/analysis_options.yaml

@@ -0,0 +1,29 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/lints.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    avoid_print: true
+    prefer_single_quotes: true
+    prefer_initializing_formals: false
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

backend/desktop-app/lib/core/config/app_environment.dart

@@ -0,0 +1,30 @@
+/// Immutable build-time configuration for a TT-Tagebuch app installation.
+class AppEnvironment {
+  const AppEnvironment._({required this.name, required this.apiBaseUrl});
+
+  factory AppEnvironment.fromBuildConfiguration() {
+    const configuredEnvironment = String.fromEnvironment(
+      'APP_ENV',
+      defaultValue: 'development',
+    );
+    const configuredApiBaseUrl = String.fromEnvironment('API_BASE_URL');
+
+    return AppEnvironment._(
+      name: configuredEnvironment,
+      apiBaseUrl: configuredApiBaseUrl.isEmpty
+          ? _defaultApiBaseUrl(configuredEnvironment)
+          : Uri.parse(configuredApiBaseUrl),
+    );
+  }
+
+  final String name;
+  final Uri apiBaseUrl;
+
+  static Uri _defaultApiBaseUrl(String environment) {
+    return switch (environment) {
+      'production' => Uri.parse('https://tt-tagebuch.de/api'),
+      'staging' => Uri.parse('https://staging.tt-tagebuch.de/api'),
+      _ => Uri.parse('http://localhost:3005/api'),
+    };
+  }
+}

backend/desktop-app/lib/core/logging/app_logger.dart

@@ -0,0 +1,12 @@
+import 'package:flutter/foundation.dart';
+
+/// Minimal logging seam. Feature code must never log credentials or API data.
+class AppLogger {
+  const AppLogger();
+
+  void info(String message) {
+    if (kDebugMode) {
+      debugPrint('[tt-desktop] $message');
+    }
+  }
+}

backend/desktop-app/lib/core/navigation/app_router.dart

@@ -0,0 +1,14 @@
+import 'package:go_router/go_router.dart';
+
+import '../../features/auth/presentation/login_page.dart';
+import '../../features/shell/presentation/app_shell.dart';
+
+/// Route boundary between public entry points and the future authenticated app.
+/// Phase 2 adds the session-based redirect to this router.
+final appRouter = GoRouter(
+  initialLocation: '/login',
+  routes: [
+    GoRoute(path: '/login', builder: (context, state) => const LoginPage()),
+    GoRoute(path: '/app', builder: (context, state) => const AppShell()),
+  ],
+);

backend/desktop-app/lib/core/network/api_client.dart

@@ -0,0 +1,85 @@
+import 'package:dio/dio.dart';
+
+import '../../data/auth/token_storage.dart';
+import '../config/app_environment.dart';
+import 'api_exception.dart';
+
+class ApiClient {
+  ApiClient({
+    required AppEnvironment environment,
+    required TokenStorage tokenStorage,
+  }) : _dio = Dio(
+         BaseOptions(
+           baseUrl: environment.apiBaseUrl.toString(),
+           connectTimeout: const Duration(seconds: 20),
+           receiveTimeout: const Duration(seconds: 60),
+           headers: const {'Accept': 'application/json'},
+         ),
+       ) {
+    _dio.interceptors.add(
+      InterceptorsWrapper(
+        onRequest: (options, handler) async {
+          final token = await tokenStorage.readToken();
+          if (token != null && token.isNotEmpty) {
+            options.headers['authcode'] = token;
+          }
+          handler.next(options);
+        },
+      ),
+    );
+  }
+
+  final Dio _dio;
+
+  /// Reads either object or list responses. Use this for endpoints whose
+  /// response shape is intentionally determined by the server.
+  Future<Object?> getData(String path) async {
+    try {
+      return await _dio.get<dynamic>(path).then((response) => response.data);
+    } on DioException catch (error) {
+      throw _toApiException(error);
+    }
+  }
+
+  Future<Map<String, dynamic>> getObject(String path) async {
+    try {
+      return Map<String, dynamic>.from((await getData(path)) as Map);
+    } on TypeError {
+      throw const ApiException(
+        'Der Server hat ein unerwartetes Datenformat geliefert.',
+      );
+    }
+  }
+
+  Future<List<dynamic>> getList(String path) async {
+    try {
+      return List<dynamic>.from((await getData(path)) as List);
+    } on TypeError {
+      throw const ApiException(
+        'Der Server hat ein unerwartetes Datenformat geliefert.',
+      );
+    }
+  }
+
+  Future<Map<String, dynamic>> postObject(String path, {Object? data}) async {
+    try {
+      final response = await _dio.post<dynamic>(path, data: data);
+      return Map<String, dynamic>.from(response.data as Map);
+    } on DioException catch (error) {
+      throw _toApiException(error);
+    }
+  }
+
+  ApiException _toApiException(DioException error) {
+    final data = error.response?.data;
+    final message = data is Map
+        ? (data['message'] ??
+                  data['error'] ??
+                  'Die Anfrage konnte nicht verarbeitet werden.')
+              .toString()
+        : error.type == DioExceptionType.connectionTimeout
+        ? 'Die Verbindung dauert zu lange.'
+        : 'Der Server ist derzeit nicht erreichbar.';
+    return ApiException(message, statusCode: error.response?.statusCode);
+  }
+}

backend/desktop-app/lib/core/network/api_exception.dart

@@ -0,0 +1,11 @@
+class ApiException implements Exception {
+  const ApiException(this.message, {this.statusCode});
+
+  final String message;
+  final int? statusCode;
+
+  bool get isUnauthorized => statusCode == 401;
+
+  @override
+  String toString() => message;
+}

backend/desktop-app/lib/core/session/app_session.dart

@@ -0,0 +1,126 @@
+import 'package:flutter/foundation.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../../data/auth/auth_repository.dart';
+import '../../data/auth/token_storage.dart';
+import '../../data/clubs/club_repository.dart';
+import '../../domain/models/club.dart';
+import '../../domain/models/club_permissions.dart';
+
+enum SessionStatus { starting, signedOut, selectingClub, ready }
+
+class AppSession extends ChangeNotifier {
+  AppSession({
+    required AuthRepository auth,
+    required ClubRepository clubs,
+    required TokenStorage tokens,
+  }) : _auth = auth,
+       _clubs = clubs,
+       _tokens = tokens;
+
+  static const _clubKey = 'active_club_id';
+  final AuthRepository _auth;
+  final ClubRepository _clubs;
+  final TokenStorage _tokens;
+  final _preferences = SharedPreferencesAsync();
+
+  SessionStatus status = SessionStatus.starting;
+  bool busy = false;
+  String? errorMessage;
+  List<Club> clubs = const [];
+  Club? activeClub;
+  ClubPermissions? permissions;
+
+  Future<void> restore() async {
+    if (await _tokens.readToken() == null) {
+      return _setStatus(SessionStatus.signedOut);
+    }
+    try {
+      if (!await _auth.isSessionValid()) return logout(notifyServer: false);
+      await _loadClubs();
+    } catch (_) {
+      await logout(notifyServer: false);
+    }
+  }
+
+  Future<void> signIn(String email, String password, bool rememberMe) async {
+    await _run(() async {
+      final token = await _auth.login(
+        email: email,
+        password: password,
+        rememberMe: rememberMe,
+      );
+      await _tokens.saveToken(token, persist: rememberMe);
+      await _loadClubs();
+    });
+  }
+
+  Future<void> requestPasswordReset(String email) =>
+      _auth.requestPasswordReset(email);
+  Future<void> resetPassword(String token, String password) =>
+      _auth.resetPassword(token, password);
+
+  Future<void> _loadClubs() async {
+    clubs = await _clubs.list();
+    final savedId = int.tryParse(await _preferences.getString(_clubKey) ?? '');
+    final selected = clubs.where((club) => club.id == savedId).firstOrNull;
+    if (selected != null) {
+      await selectClub(selected.id);
+      return;
+    }
+    status = SessionStatus.selectingClub;
+    notifyListeners();
+  }
+
+  Future<void> selectClub(int clubId) async {
+    await _run(() async {
+      final club = clubs.firstWhere((item) => item.id == clubId);
+      permissions = await _clubs.permissions(clubId);
+      activeClub = club;
+      await _preferences.setString(_clubKey, '$clubId');
+      status = SessionStatus.ready;
+    });
+  }
+
+  void chooseClub(int clubId) {
+    activeClub = clubs.firstWhere((club) => club.id == clubId);
+    notifyListeners();
+  }
+
+  Future<void> logout({bool notifyServer = true}) async {
+    try {
+      if (notifyServer) {
+        await _auth.logout();
+      }
+    } catch (_) {}
+    await _tokens.clear();
+    await _preferences.remove(_clubKey);
+    clubs = const [];
+    activeClub = null;
+    permissions = null;
+    _setStatus(SessionStatus.signedOut);
+  }
+
+  Future<void> _run(Future<void> Function() task) async {
+    busy = true;
+    errorMessage = null;
+    notifyListeners();
+    try {
+      await task();
+    } catch (error) {
+      errorMessage = error.toString();
+    }
+    busy = false;
+    if (status == SessionStatus.starting && errorMessage != null) {
+      status = SessionStatus.signedOut;
+    }
+    notifyListeners();
+  }
+
+  void _setStatus(SessionStatus value) {
+    status = value;
+    busy = false;
+    errorMessage = null;
+    notifyListeners();
+  }
+}

backend/desktop-app/lib/core/theme/app_theme.dart

@@ -0,0 +1,84 @@
+import 'package:flutter/material.dart';
+
+abstract final class AppColors {
+  static const green = Color(0xFF17614F);
+  static const greenDark = Color(0xFF10493B);
+  static const ink = Color(0xFF17211E);
+  static const canvas = Color(0xFFF7F8F5);
+  static const surface = Color(0xFFFFFFFF);
+  static const muted = Color(0xFF6C7670);
+  static const line = Color(0xFFDDE2DC);
+  static const coral = Color(0xFFD66D5B);
+}
+
+abstract final class AppTheme {
+  static final light = ThemeData(
+    useMaterial3: true,
+    scaffoldBackgroundColor: AppColors.canvas,
+    colorScheme: const ColorScheme.light(
+      primary: AppColors.green,
+      onPrimary: Colors.white,
+      surface: AppColors.surface,
+      onSurface: AppColors.ink,
+      outline: AppColors.line,
+      error: AppColors.coral,
+    ),
+    textTheme: const TextTheme(
+      displaySmall: TextStyle(
+        fontSize: 34,
+        fontWeight: FontWeight.w700,
+        letterSpacing: -0.8,
+        color: AppColors.ink,
+      ),
+      headlineSmall: TextStyle(
+        fontSize: 24,
+        fontWeight: FontWeight.w700,
+        letterSpacing: -0.3,
+        color: AppColors.ink,
+      ),
+      titleLarge: TextStyle(
+        fontSize: 19,
+        fontWeight: FontWeight.w700,
+        color: AppColors.ink,
+      ),
+      titleMedium: TextStyle(
+        fontSize: 15,
+        fontWeight: FontWeight.w700,
+        color: AppColors.ink,
+      ),
+      bodyLarge: TextStyle(fontSize: 16, height: 1.45, color: AppColors.ink),
+      bodyMedium: TextStyle(fontSize: 14, height: 1.4, color: AppColors.ink),
+      bodySmall: TextStyle(fontSize: 12, height: 1.35, color: AppColors.muted),
+      labelLarge: TextStyle(fontSize: 14, fontWeight: FontWeight.w700),
+    ),
+    inputDecorationTheme: InputDecorationTheme(
+      filled: true,
+      fillColor: AppColors.surface,
+      contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
+      border: OutlineInputBorder(
+        borderRadius: BorderRadius.circular(8),
+        borderSide: const BorderSide(color: AppColors.line),
+      ),
+      enabledBorder: OutlineInputBorder(
+        borderRadius: BorderRadius.circular(8),
+        borderSide: const BorderSide(color: AppColors.line),
+      ),
+      focusedBorder: OutlineInputBorder(
+        borderRadius: BorderRadius.circular(8),
+        borderSide: const BorderSide(color: AppColors.green, width: 2),
+      ),
+      labelStyle: const TextStyle(color: AppColors.muted),
+    ),
+    elevatedButtonTheme: ElevatedButtonThemeData(
+      style: ElevatedButton.styleFrom(
+        elevation: 0,
+        backgroundColor: AppColors.green,
+        foregroundColor: Colors.white,
+        padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 17),
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
+        textStyle: const TextStyle(fontWeight: FontWeight.w700, fontSize: 14),
+      ),
+    ),
+    dividerColor: AppColors.line,
+  );
+}

backend/desktop-app/lib/core/widgets/async_content.dart

@@ -0,0 +1,51 @@
+import 'package:flutter/material.dart';
+
+class AppLoadingView extends StatelessWidget {
+  const AppLoadingView({super.key, this.label = 'Daten werden geladen …'});
+
+  final String label;
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Semantics(label: label, child: const CircularProgressIndicator()),
+    );
+  }
+}
+
+class AppErrorView extends StatelessWidget {
+  const AppErrorView({super.key, required this.message, this.onRetry});
+
+  final String message;
+  final VoidCallback? onRetry;
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: ConstrainedBox(
+        constraints: const BoxConstraints(maxWidth: 420),
+        child: Card(
+          child: Padding(
+            padding: const EdgeInsets.all(24),
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const Icon(Icons.cloud_off_outlined, size: 36),
+                const SizedBox(height: 12),
+                Text(message, textAlign: TextAlign.center),
+                if (onRetry != null) ...[
+                  const SizedBox(height: 16),
+                  FilledButton.icon(
+                    onPressed: onRetry,
+                    icon: const Icon(Icons.refresh),
+                    label: const Text('Erneut versuchen'),
+                  ),
+                ],
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

backend/desktop-app/lib/core/widgets/product_mark.dart

@@ -0,0 +1,30 @@
+import 'package:flutter/material.dart';
+
+import '../theme/app_theme.dart';
+
+class ProductMark extends StatelessWidget {
+  const ProductMark({super.key, this.light = false, this.size = 42});
+
+  final bool light;
+  final double size;
+
+  @override
+  Widget build(BuildContext context) {
+    final color = light ? Colors.white : AppColors.green;
+    return SizedBox(
+      width: size,
+      height: size,
+      child: Stack(
+        alignment: Alignment.center,
+        children: [
+          Icon(Icons.sports_tennis_rounded, color: color, size: size * .78),
+          Positioned(
+            right: size * .05,
+            top: size * .12,
+            child: Icon(Icons.circle, color: color, size: size * .18),
+          ),
+        ],
+      ),
+    );
+  }
+}

backend/desktop-app/lib/data/README.md

@@ -0,0 +1,4 @@
+# Data
+
+API-Clients, DTOs, lokale Speicheradapter und Repository-Implementierungen
+liegen hier. Diese Schicht enthält keine Widgets.

backend/desktop-app/lib/data/auth/auth_repository.dart

@@ -0,0 +1,28 @@
+import '../../core/network/api_client.dart';
+
+class AuthRepository {
+  const AuthRepository(this._api);
+  final ApiClient _api;
+
+  Future<String> login({
+    required String email,
+    required String password,
+    required bool rememberMe,
+  }) async {
+    final response = await _api.postObject(
+      '/auth/login',
+      data: {'email': email, 'password': password, 'rememberMe': rememberMe},
+    );
+    return response['token'] as String;
+  }
+
+  Future<bool> isSessionValid() async =>
+      (await _api.getObject('/session/status'))['valid'] == true;
+  Future<void> logout() async => _api.postObject('/auth/logout');
+  Future<void> requestPasswordReset(String email) =>
+      _api.postObject('/auth/forgot-password', data: {'email': email});
+  Future<void> resetPassword(String token, String password) => _api.postObject(
+    '/auth/reset-password',
+    data: {'token': token, 'password': password},
+  );
+}

backend/desktop-app/lib/data/auth/token_storage.dart

@@ -0,0 +1,27 @@
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+class TokenStorage {
+  TokenStorage({FlutterSecureStorage? storage})
+    : _storage = storage ?? const FlutterSecureStorage();
+
+  static const _tokenKey = 'tt_tagebuch.jwt';
+  final FlutterSecureStorage _storage;
+  String? _sessionToken;
+
+  Future<String?> readToken() async =>
+      _sessionToken ?? _storage.read(key: _tokenKey);
+
+  Future<void> saveToken(String token, {required bool persist}) async {
+    _sessionToken = persist ? null : token;
+    if (persist) {
+      await _storage.write(key: _tokenKey, value: token);
+    } else {
+      await _storage.delete(key: _tokenKey);
+    }
+  }
+
+  Future<void> clear() async {
+    _sessionToken = null;
+    await _storage.delete(key: _tokenKey);
+  }
+}

backend/desktop-app/lib/data/club_overview/club_overview_repository.dart

@@ -0,0 +1,20 @@
+import '../../core/network/api_client.dart';
+
+/// Read-only Phase-3 access to the existing club APIs.
+class ClubOverviewRepository {
+  const ClubOverviewRepository(this._api);
+
+  final ApiClient _api;
+
+  Future<Object?> dashboard(int clubId) =>
+      _api.getData('/club-dashboard/$clubId');
+  Future<Object?> memberDashboard(int clubId) =>
+      _api.getData('/clubmembers/dashboard/$clubId');
+  Future<Object?> calendarEvents(int clubId) =>
+      _api.getData('/calendar-events/$clubId');
+  Future<Object?> schedule(int clubId) =>
+      _api.getData('/matches/leagues/current/$clubId');
+  Future<Object?> members(int clubId) =>
+      _api.getData('/clubmembers/get/$clubId/false');
+  Future<Object?> training(int clubId) => _api.getData('/diary/$clubId');
+}

backend/desktop-app/lib/data/clubs/club_repository.dart

@@ -0,0 +1,15 @@
+import '../../core/network/api_client.dart';
+import '../../domain/models/club.dart';
+import '../../domain/models/club_permissions.dart';
+
+class ClubRepository {
+  const ClubRepository(this._api);
+  final ApiClient _api;
+
+  Future<List<Club>> list() async => (await _api.getList('/clubs'))
+      .map((item) => Club.fromJson(Map<String, dynamic>.from(item as Map)))
+      .toList();
+
+  Future<ClubPermissions> permissions(int clubId) async =>
+      ClubPermissions.fromJson(await _api.getObject('/permissions/$clubId'));
+}

backend/desktop-app/lib/domain/README.md

@@ -0,0 +1,4 @@
+# Domain
+
+Fachmodelle, Repository-Abstraktionen und Use-Cases liegen hier. Sie bleiben
+von Flutter-Widgets und konkreten HTTP-Implementierungen unabhängig.

backend/desktop-app/lib/domain/models/club.dart

@@ -0,0 +1,11 @@
+class Club {
+  const Club({required this.id, required this.name});
+
+  final int id;
+  final String name;
+
+  factory Club.fromJson(Map<String, dynamic> json) => Club(
+    id: (json['id'] as num).toInt(),
+    name: json['name'] as String? ?? 'Unbenannter Verein',
+  );
+}

backend/desktop-app/lib/domain/models/club_permissions.dart

@@ -0,0 +1,14 @@
+class ClubPermissions {
+  const ClubPermissions({required this.role, required this.permissions});
+
+  final String? role;
+  final Map<String, dynamic> permissions;
+
+  factory ClubPermissions.fromJson(Map<String, dynamic> json) =>
+      ClubPermissions(
+        role: json['role'] as String?,
+        permissions: Map<String, dynamic>.from(
+          json['permissions'] as Map? ?? const {},
+        ),
+      );
+}

backend/desktop-app/lib/features/auth/presentation/login_page.dart

@@ -0,0 +1,327 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/theme/app_theme.dart';
+import '../../../core/widgets/product_mark.dart';
+
+typedef SignInCallback =
+    Future<void> Function(String email, String password, bool rememberMe);
+
+/// A focused sign-in surface. Navigation and backend integration belong to the
+/// caller; this widget only validates input and forwards the submitted values.
+class LoginPage extends StatefulWidget {
+  const LoginPage({
+    super.key,
+    this.onSignIn,
+    this.onForgotPassword,
+    this.isLoading = false,
+    this.errorMessage,
+  });
+
+  final SignInCallback? onSignIn;
+  final VoidCallback? onForgotPassword;
+  final bool isLoading;
+  final String? errorMessage;
+
+  @override
+  State<LoginPage> createState() => _LoginPageState();
+}
+
+class _LoginPageState extends State<LoginPage> {
+  final _formKey = GlobalKey<FormState>();
+  final _emailController = TextEditingController();
+  final _passwordController = TextEditingController();
+  bool _obscurePassword = true;
+  bool _rememberMe = true;
+
+  @override
+  void dispose() {
+    _emailController.dispose();
+    _passwordController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _submit() async {
+    if (!_formKey.currentState!.validate() || widget.isLoading) return;
+    await widget.onSignIn?.call(
+      _emailController.text.trim(),
+      _passwordController.text,
+      _rememberMe,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: LayoutBuilder(
+        builder: (context, constraints) {
+          final spacious = constraints.maxWidth >= 840;
+          return Row(
+            children: [
+              if (spacious) const _WelcomePanel(),
+              Expanded(
+                child: Center(
+                  child: SingleChildScrollView(
+                    padding: const EdgeInsets.all(32),
+                    child: SizedBox(
+                      width: 420,
+                      child: Form(
+                        key: _formKey,
+                        child: _LoginForm(
+                          emailController: _emailController,
+                          passwordController: _passwordController,
+                          obscurePassword: _obscurePassword,
+                          rememberMe: _rememberMe,
+                          isLoading: widget.isLoading,
+                          errorMessage: widget.errorMessage,
+                          onTogglePassword: () => setState(
+                            () => _obscurePassword = !_obscurePassword,
+                          ),
+                          onRememberMeChanged: (value) =>
+                              setState(() => _rememberMe = value),
+                          onForgotPassword: widget.onForgotPassword,
+                          onSubmit: _submit,
+                        ),
+                      ),
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          );
+        },
+      ),
+    );
+  }
+}
+
+class _WelcomePanel extends StatelessWidget {
+  const _WelcomePanel();
+
+  @override
+  Widget build(BuildContext context) => Expanded(
+    child: Container(
+      color: AppColors.green,
+      padding: const EdgeInsets.all(56),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Row(
+            children: [
+              ProductMark(light: true),
+              SizedBox(width: 12),
+              Text(
+                'TT-Tagebuch',
+                style: TextStyle(
+                  color: Colors.white,
+                  fontWeight: FontWeight.w700,
+                  fontSize: 20,
+                ),
+              ),
+            ],
+          ),
+          const Spacer(),
+          const Text(
+            'Der gemeinsame\nSpielraum für\neuren Verein.',
+            style: TextStyle(
+              color: Colors.white,
+              fontSize: 42,
+              fontWeight: FontWeight.w700,
+              height: 1.08,
+              letterSpacing: -1.2,
+            ),
+          ),
+          const SizedBox(height: 20),
+          Text(
+            'Trainings, Mannschaften und Termine an einem klaren Ort – für Mitglieder, Trainer und Verwaltung.',
+            style: TextStyle(
+              color: Colors.white.withValues(alpha: .78),
+              fontSize: 16,
+              height: 1.5,
+            ),
+          ),
+          const Spacer(),
+          Text(
+            'Tischtennis organisieren. Gemeinsam wachsen.',
+            style: TextStyle(
+              color: Colors.white.withValues(alpha: .68),
+              fontSize: 13,
+            ),
+          ),
+        ],
+      ),
+    ),
+  );
+}
+
+class _LoginForm extends StatelessWidget {
+  const _LoginForm({
+    required this.emailController,
+    required this.passwordController,
+    required this.obscurePassword,
+    required this.rememberMe,
+    required this.isLoading,
+    required this.onTogglePassword,
+    required this.onRememberMeChanged,
+    required this.onSubmit,
+    this.errorMessage,
+    this.onForgotPassword,
+  });
+
+  final TextEditingController emailController;
+  final TextEditingController passwordController;
+  final bool obscurePassword;
+  final bool rememberMe;
+  final bool isLoading;
+  final String? errorMessage;
+  final VoidCallback onTogglePassword;
+  final ValueChanged<bool> onRememberMeChanged;
+  final VoidCallback onSubmit;
+  final VoidCallback? onForgotPassword;
+
+  @override
+  Widget build(BuildContext context) {
+    final text = Theme.of(context).textTheme;
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const ProductMark(size: 38),
+        const SizedBox(height: 36),
+        Text('Willkommen zurück', style: text.displaySmall),
+        const SizedBox(height: 8),
+        Text(
+          'Melde dich mit deinem Vereinszugang an.',
+          style: text.bodyLarge?.copyWith(color: AppColors.muted),
+        ),
+        if (errorMessage != null) ...[
+          const SizedBox(height: 24),
+          _MessagePanel(message: errorMessage!, isError: true),
+        ],
+        const SizedBox(height: 28),
+        TextFormField(
+          controller: emailController,
+          enabled: !isLoading,
+          keyboardType: TextInputType.emailAddress,
+          textInputAction: TextInputAction.next,
+          autofillHints: const [AutofillHints.username, AutofillHints.email],
+          decoration: const InputDecoration(
+            labelText: 'E-Mail-Adresse',
+            prefixIcon: Icon(Icons.mail_outline_rounded),
+          ),
+          validator: (value) {
+            final email = value?.trim() ?? '';
+            if (email.isEmpty) return 'Bitte gib deine E-Mail-Adresse ein.';
+            if (!email.contains('@')) return 'Bitte prüfe die E-Mail-Adresse.';
+            return null;
+          },
+        ),
+        const SizedBox(height: 16),
+        TextFormField(
+          controller: passwordController,
+          enabled: !isLoading,
+          obscureText: obscurePassword,
+          textInputAction: TextInputAction.done,
+          autofillHints: const [AutofillHints.password],
+          onFieldSubmitted: (_) => onSubmit(),
+          decoration: InputDecoration(
+            labelText: 'Passwort',
+            prefixIcon: const Icon(Icons.lock_outline_rounded),
+            suffixIcon: IconButton(
+              tooltip: obscurePassword
+                  ? 'Passwort anzeigen'
+                  : 'Passwort verbergen',
+              onPressed: isLoading ? null : onTogglePassword,
+              icon: Icon(
+                obscurePassword
+                    ? Icons.visibility_outlined
+                    : Icons.visibility_off_outlined,
+              ),
+            ),
+          ),
+          validator: (value) =>
+              (value?.isEmpty ?? true) ? 'Bitte gib dein Passwort ein.' : null,
+        ),
+        const SizedBox(height: 8),
+        Wrap(
+          crossAxisAlignment: WrapCrossAlignment.center,
+          alignment: WrapAlignment.spaceBetween,
+          children: [
+            Checkbox(
+              value: rememberMe,
+              onChanged: isLoading
+                  ? null
+                  : (value) => onRememberMeChanged(value ?? false),
+            ),
+            const Text('Angemeldet bleiben'),
+            TextButton(
+              onPressed: isLoading ? null : onForgotPassword,
+              child: const Text('Passwort vergessen?'),
+            ),
+          ],
+        ),
+        const SizedBox(height: 18),
+        SizedBox(
+          width: double.infinity,
+          child: ElevatedButton.icon(
+            onPressed: isLoading ? null : onSubmit,
+            icon: isLoading
+                ? const SizedBox(
+                    width: 18,
+                    height: 18,
+                    child: CircularProgressIndicator(
+                      strokeWidth: 2,
+                      color: Colors.white,
+                    ),
+                  )
+                : const Icon(Icons.login_rounded),
+            label: Text(isLoading ? 'Anmeldung läuft …' : 'Anmelden'),
+          ),
+        ),
+        const SizedBox(height: 28),
+        const Divider(),
+        const SizedBox(height: 18),
+        Text(
+          'Dein Zugang wird von deinem Verein verwaltet.',
+          style: text.bodySmall,
+        ),
+      ],
+    );
+  }
+}
+
+class _MessagePanel extends StatelessWidget {
+  const _MessagePanel({required this.message, required this.isError});
+
+  final String message;
+  final bool isError;
+
+  @override
+  Widget build(BuildContext context) {
+    final color = isError ? AppColors.coral : AppColors.green;
+    return Semantics(
+      liveRegion: true,
+      child: Container(
+        width: double.infinity,
+        padding: const EdgeInsets.all(14),
+        decoration: BoxDecoration(
+          color: color.withValues(alpha: .09),
+          border: Border(left: BorderSide(color: color, width: 3)),
+        ),
+        child: Row(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Icon(
+              isError
+                  ? Icons.info_outline_rounded
+                  : Icons.check_circle_outline_rounded,
+              color: color,
+            ),
+            const SizedBox(width: 10),
+            Expanded(
+              child: Text(message, style: TextStyle(color: AppColors.ink)),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

backend/desktop-app/lib/features/auth/presentation/password_reset_pages.dart

@@ -0,0 +1,293 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/theme/app_theme.dart';
+import '../../../core/widgets/product_mark.dart';
+
+typedef ResetRequestCallback = Future<void> Function(String email);
+typedef ResetPasswordCallback = Future<void> Function(String password);
+
+class PasswordResetRequestPage extends StatefulWidget {
+  const PasswordResetRequestPage({
+    super.key,
+    this.onRequestReset,
+    this.onBackToLogin,
+    this.isLoading = false,
+    this.errorMessage,
+    this.isSuccess = false,
+  });
+
+  final ResetRequestCallback? onRequestReset;
+  final VoidCallback? onBackToLogin;
+  final bool isLoading;
+  final String? errorMessage;
+  final bool isSuccess;
+
+  @override
+  State<PasswordResetRequestPage> createState() =>
+      _PasswordResetRequestPageState();
+}
+
+class _PasswordResetRequestPageState extends State<PasswordResetRequestPage> {
+  final _formKey = GlobalKey<FormState>();
+  final _emailController = TextEditingController();
+
+  @override
+  void dispose() {
+    _emailController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _submit() async {
+    if (!_formKey.currentState!.validate() || widget.isLoading) return;
+    await widget.onRequestReset?.call(_emailController.text.trim());
+  }
+
+  @override
+  Widget build(BuildContext context) => _AuthFrame(
+    title: widget.isSuccess ? 'E-Mail unterwegs' : 'Passwort zurücksetzen',
+    subtitle: widget.isSuccess
+        ? 'Falls ein Zugang zu dieser Adresse gehört, findest du dort in Kürze einen Link zum Zurücksetzen.'
+        : 'Gib deine Vereins-E-Mail-Adresse ein. Wir schicken dir einen sicheren Link.',
+    child: widget.isSuccess
+        ? _BackButton(onPressed: widget.onBackToLogin)
+        : Form(
+            key: _formKey,
+            child: Column(
+              children: [
+                if (widget.errorMessage != null) ...[
+                  _AuthNotice(message: widget.errorMessage!, error: true),
+                  const SizedBox(height: 20),
+                ],
+                TextFormField(
+                  controller: _emailController,
+                  enabled: !widget.isLoading,
+                  keyboardType: TextInputType.emailAddress,
+                  autofillHints: const [AutofillHints.email],
+                  decoration: const InputDecoration(
+                    labelText: 'E-Mail-Adresse',
+                    prefixIcon: Icon(Icons.mail_outline_rounded),
+                  ),
+                  validator: (value) => (value?.trim().contains('@') ?? false)
+                      ? null
+                      : 'Bitte gib eine gültige E-Mail-Adresse ein.',
+                ),
+                const SizedBox(height: 24),
+                _PrimaryButton(
+                  loading: widget.isLoading,
+                  icon: Icons.send_outlined,
+                  label: 'Link anfordern',
+                  onPressed: _submit,
+                ),
+                const SizedBox(height: 12),
+                _BackButton(onPressed: widget.onBackToLogin),
+              ],
+            ),
+          ),
+  );
+}
+
+class PasswordResetPage extends StatefulWidget {
+  const PasswordResetPage({
+    super.key,
+    required this.token,
+    this.onSavePassword,
+    this.onBackToLogin,
+    this.isLoading = false,
+    this.errorMessage,
+    this.isSuccess = false,
+  });
+
+  final String token;
+  final ResetPasswordCallback? onSavePassword;
+  final VoidCallback? onBackToLogin;
+  final bool isLoading;
+  final String? errorMessage;
+  final bool isSuccess;
+
+  @override
+  State<PasswordResetPage> createState() => _PasswordResetPageState();
+}
+
+class _PasswordResetPageState extends State<PasswordResetPage> {
+  final _formKey = GlobalKey<FormState>();
+  final _passwordController = TextEditingController();
+  final _confirmationController = TextEditingController();
+
+  @override
+  void dispose() {
+    _passwordController.dispose();
+    _confirmationController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _submit() async {
+    if (!_formKey.currentState!.validate() || widget.isLoading) return;
+    await widget.onSavePassword?.call(_passwordController.text);
+  }
+
+  @override
+  Widget build(BuildContext context) => _AuthFrame(
+    title: widget.isSuccess ? 'Passwort gespeichert' : 'Neues Passwort wählen',
+    subtitle: widget.isSuccess
+        ? 'Dein Zugang ist wieder bereit. Du kannst dich jetzt mit deinem neuen Passwort anmelden.'
+        : 'Wähle ein neues Passwort für deinen Vereinszugang.',
+    child: widget.isSuccess
+        ? _BackButton(onPressed: widget.onBackToLogin, label: 'Zur Anmeldung')
+        : Form(
+            key: _formKey,
+            child: Column(
+              children: [
+                if (widget.errorMessage != null) ...[
+                  _AuthNotice(message: widget.errorMessage!, error: true),
+                  const SizedBox(height: 20),
+                ],
+                TextFormField(
+                  controller: _passwordController,
+                  enabled: !widget.isLoading,
+                  obscureText: true,
+                  autofillHints: const [AutofillHints.newPassword],
+                  decoration: const InputDecoration(
+                    labelText: 'Neues Passwort',
+                    prefixIcon: Icon(Icons.lock_outline_rounded),
+                  ),
+                  validator: (value) => (value?.length ?? 0) >= 8
+                      ? null
+                      : 'Das Passwort muss mindestens 8 Zeichen haben.',
+                ),
+                const SizedBox(height: 16),
+                TextFormField(
+                  controller: _confirmationController,
+                  enabled: !widget.isLoading,
+                  obscureText: true,
+                  textInputAction: TextInputAction.done,
+                  onFieldSubmitted: (_) => _submit(),
+                  decoration: const InputDecoration(
+                    labelText: 'Passwort wiederholen',
+                    prefixIcon: Icon(Icons.lock_reset_outlined),
+                  ),
+                  validator: (value) => value == _passwordController.text
+                      ? null
+                      : 'Die Passwörter stimmen nicht überein.',
+                ),
+                const SizedBox(height: 24),
+                _PrimaryButton(
+                  loading: widget.isLoading,
+                  icon: Icons.save_outlined,
+                  label: 'Passwort speichern',
+                  onPressed: _submit,
+                ),
+              ],
+            ),
+          ),
+  );
+}
+
+class _AuthFrame extends StatelessWidget {
+  const _AuthFrame({
+    required this.title,
+    required this.subtitle,
+    required this.child,
+  });
+  final String title;
+  final String subtitle;
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) {
+    final text = Theme.of(context).textTheme;
+    return Scaffold(
+      body: Center(
+        child: SingleChildScrollView(
+          padding: const EdgeInsets.all(32),
+          child: SizedBox(
+            width: 420,
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const ProductMark(size: 38),
+                const SizedBox(height: 36),
+                Text(title, style: text.displaySmall),
+                const SizedBox(height: 8),
+                Text(
+                  subtitle,
+                  style: text.bodyLarge?.copyWith(color: AppColors.muted),
+                ),
+                const SizedBox(height: 32),
+                child,
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _PrimaryButton extends StatelessWidget {
+  const _PrimaryButton({
+    required this.loading,
+    required this.icon,
+    required this.label,
+    required this.onPressed,
+  });
+  final bool loading;
+  final IconData icon;
+  final String label;
+  final VoidCallback onPressed;
+  @override
+  Widget build(BuildContext context) => SizedBox(
+    width: double.infinity,
+    child: ElevatedButton.icon(
+      onPressed: loading ? null : onPressed,
+      icon: loading
+          ? const SizedBox(
+              width: 18,
+              height: 18,
+              child: CircularProgressIndicator(
+                strokeWidth: 2,
+                color: Colors.white,
+              ),
+            )
+          : Icon(icon),
+      label: Text(loading ? 'Bitte warten …' : label),
+    ),
+  );
+}
+
+class _BackButton extends StatelessWidget {
+  const _BackButton({this.onPressed, this.label = 'Zurück zur Anmeldung'});
+  final VoidCallback? onPressed;
+  final String label;
+  @override
+  Widget build(BuildContext context) => TextButton.icon(
+    onPressed: onPressed,
+    icon: const Icon(Icons.arrow_back_rounded),
+    label: Text(label),
+  );
+}
+
+class _AuthNotice extends StatelessWidget {
+  const _AuthNotice({required this.message, required this.error});
+  final String message;
+  final bool error;
+  @override
+  Widget build(BuildContext context) => Semantics(
+    liveRegion: true,
+    child: Container(
+      width: double.infinity,
+      padding: const EdgeInsets.all(14),
+      decoration: BoxDecoration(
+        color: (error ? AppColors.coral : AppColors.green).withValues(
+          alpha: .09,
+        ),
+        border: Border(
+          left: BorderSide(
+            color: error ? AppColors.coral : AppColors.green,
+            width: 3,
+          ),
+        ),
+      ),
+      child: Text(message),
+    ),
+  );
+}

backend/desktop-app/lib/features/clubs/presentation/club_selection_page.dart

@@ -0,0 +1,232 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/theme/app_theme.dart';
+import '../../../core/widgets/product_mark.dart';
+
+class ClubViewModel {
+  const ClubViewModel({
+    required this.id,
+    required this.name,
+    required this.subtitle,
+  });
+  final String id;
+  final String name;
+  final String subtitle;
+}
+
+class ClubSelectionPage extends StatelessWidget {
+  const ClubSelectionPage({
+    super.key,
+    required this.clubs,
+    required this.selectedClubId,
+    required this.onSelected,
+    this.onContinue,
+    this.onRetry,
+    this.onLogout,
+    this.isLoading = false,
+    this.errorMessage,
+  });
+
+  final List<ClubViewModel> clubs;
+  final String? selectedClubId;
+  final ValueChanged<String> onSelected;
+  final VoidCallback? onContinue;
+  final VoidCallback? onRetry;
+  final VoidCallback? onLogout;
+  final bool isLoading;
+  final String? errorMessage;
+
+  @override
+  Widget build(BuildContext context) {
+    final text = Theme.of(context).textTheme;
+    final content = isLoading
+        ? const _LoadingState()
+        : errorMessage != null
+        ? _ErrorState(message: errorMessage!, onRetry: onRetry)
+        : clubs.isEmpty
+        ? const _EmptyState()
+        : _ClubList(
+            clubs: clubs,
+            selectedClubId: selectedClubId,
+            onSelected: onSelected,
+          );
+    return Scaffold(
+      body: Center(
+        child: ConstrainedBox(
+          constraints: const BoxConstraints(maxWidth: 640),
+          child: Padding(
+            padding: const EdgeInsets.all(32),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const ProductMark(size: 38),
+                const SizedBox(height: 36),
+                Text('Verein auswählen', style: text.displaySmall),
+                const SizedBox(height: 8),
+                Text(
+                  'Wähle den Verein, in dem du jetzt arbeiten möchtest.',
+                  style: text.bodyLarge?.copyWith(color: AppColors.muted),
+                ),
+                const SizedBox(height: 28),
+                Expanded(child: content),
+                if (!isLoading && errorMessage == null && clubs.isNotEmpty) ...[
+                  const SizedBox(height: 20),
+                  SizedBox(
+                    width: double.infinity,
+                    child: ElevatedButton.icon(
+                      onPressed: selectedClubId == null ? null : onContinue,
+                      icon: const Icon(Icons.arrow_forward_rounded),
+                      label: const Text('Weiter zum Verein'),
+                    ),
+                  ),
+                ],
+                if (onLogout != null) ...[
+                  const SizedBox(height: 8),
+                  TextButton.icon(
+                    onPressed: onLogout,
+                    icon: const Icon(Icons.logout_rounded),
+                    label: const Text('Abmelden'),
+                  ),
+                ],
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _ClubList extends StatelessWidget {
+  const _ClubList({
+    required this.clubs,
+    required this.selectedClubId,
+    required this.onSelected,
+  });
+  final List<ClubViewModel> clubs;
+  final String? selectedClubId;
+  final ValueChanged<String> onSelected;
+  @override
+  Widget build(BuildContext context) => ListView.separated(
+    itemCount: clubs.length,
+    separatorBuilder: (_, _) => const SizedBox(height: 10),
+    itemBuilder: (context, index) {
+      final club = clubs[index];
+      final selected = club.id == selectedClubId;
+      return Semantics(
+        selected: selected,
+        button: true,
+        child: Material(
+          color: selected
+              ? AppColors.green.withValues(alpha: .08)
+              : AppColors.surface,
+          shape: RoundedRectangleBorder(
+            side: BorderSide(
+              color: selected ? AppColors.green : AppColors.line,
+              width: selected ? 2 : 1,
+            ),
+            borderRadius: BorderRadius.circular(8),
+          ),
+          child: InkWell(
+            borderRadius: BorderRadius.circular(8),
+            onTap: () => onSelected(club.id),
+            child: Padding(
+              padding: const EdgeInsets.all(18),
+              child: Row(
+                children: [
+                  Icon(
+                    selected
+                        ? Icons.check_circle_rounded
+                        : Icons.location_city_outlined,
+                    color: selected ? AppColors.green : AppColors.muted,
+                  ),
+                  const SizedBox(width: 14),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          club.name,
+                          style: Theme.of(context).textTheme.titleLarge,
+                        ),
+                        const SizedBox(height: 3),
+                        Text(
+                          club.subtitle,
+                          style: Theme.of(context).textTheme.bodyMedium
+                              ?.copyWith(color: AppColors.muted),
+                        ),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      );
+    },
+  );
+}
+
+class _LoadingState extends StatelessWidget {
+  const _LoadingState();
+  @override
+  Widget build(BuildContext context) => const Center(
+    child: Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        CircularProgressIndicator(),
+        SizedBox(height: 16),
+        Text('Vereine werden geladen …'),
+      ],
+    ),
+  );
+}
+
+class _EmptyState extends StatelessWidget {
+  const _EmptyState();
+  @override
+  Widget build(BuildContext context) => const Center(
+    child: Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Icon(Icons.groups_outlined, size: 42, color: AppColors.muted),
+        SizedBox(height: 14),
+        Text('Kein Verein verfügbar.'),
+        SizedBox(height: 4),
+        Text(
+          'Bitte wende dich an die Vereinsverwaltung.',
+          textAlign: TextAlign.center,
+          style: TextStyle(color: AppColors.muted),
+        ),
+      ],
+    ),
+  );
+}
+
+class _ErrorState extends StatelessWidget {
+  const _ErrorState({required this.message, this.onRetry});
+  final String message;
+  final VoidCallback? onRetry;
+  @override
+  Widget build(BuildContext context) => Center(
+    child: Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        const Icon(
+          Icons.info_outline_rounded,
+          size: 42,
+          color: AppColors.coral,
+        ),
+        const SizedBox(height: 14),
+        Text(message, textAlign: TextAlign.center),
+        const SizedBox(height: 16),
+        OutlinedButton.icon(
+          onPressed: onRetry,
+          icon: const Icon(Icons.refresh_rounded),
+          label: const Text('Erneut versuchen'),
+        ),
+      ],
+    ),
+  );
+}

backend/desktop-app/lib/features/overview/presentation/club_overview_page.dart

@@ -0,0 +1,197 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/network/api_client.dart';
+import '../../../core/theme/app_theme.dart';
+import '../../../core/widgets/async_content.dart';
+import '../../../data/club_overview/club_overview_repository.dart';
+
+enum ClubOverviewKind {
+  dashboard,
+  memberDashboard,
+  calendar,
+  schedule,
+  members,
+  training,
+}
+
+/// A compact, read-only desktop view for the club data exposed by Phase 3.
+class ClubOverviewPage extends StatefulWidget {
+  const ClubOverviewPage({
+    super.key,
+    required this.kind,
+    required this.clubId,
+    required this.title,
+    required this.description,
+    required this.icon,
+    required this.api,
+  });
+
+  final ClubOverviewKind kind;
+  final int clubId;
+  final String title;
+  final String description;
+  final IconData icon;
+  final ApiClient api;
+
+  @override
+  State<ClubOverviewPage> createState() => _ClubOverviewPageState();
+}
+
+class _ClubOverviewPageState extends State<ClubOverviewPage> {
+  late Future<Object?> _request;
+
+  @override
+  void initState() {
+    super.initState();
+    _request = _load();
+  }
+
+  @override
+  void didUpdateWidget(covariant ClubOverviewPage oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.kind != widget.kind || oldWidget.clubId != widget.clubId) {
+      _request = _load();
+    }
+  }
+
+  Future<Object?> _load() {
+    final repository = ClubOverviewRepository(widget.api);
+    return switch (widget.kind) {
+      ClubOverviewKind.dashboard => repository.dashboard(widget.clubId),
+      ClubOverviewKind.memberDashboard => repository.memberDashboard(
+        widget.clubId,
+      ),
+      ClubOverviewKind.calendar => repository.calendarEvents(widget.clubId),
+      ClubOverviewKind.schedule => repository.schedule(widget.clubId),
+      ClubOverviewKind.members => repository.members(widget.clubId),
+      ClubOverviewKind.training => repository.training(widget.clubId),
+    };
+  }
+
+  void _retry() => setState(() => _request = _load());
+
+  @override
+  Widget build(BuildContext context) => FutureBuilder<Object?>(
+    future: _request,
+    builder: (context, snapshot) {
+      if (snapshot.connectionState != ConnectionState.done) {
+        return const AppLoadingView();
+      }
+      if (snapshot.hasError) {
+        return AppErrorView(
+          message: snapshot.error.toString(),
+          onRetry: _retry,
+        );
+      }
+      final records = _records(snapshot.data);
+      if (records.isEmpty) return _EmptyOverview(icon: widget.icon);
+      return _OverviewList(records: records, icon: widget.icon);
+    },
+  );
+}
+
+List<Map<String, dynamic>> _records(Object? data) {
+  if (data is List) {
+    return data
+        .whereType<Map>()
+        .map((item) => Map<String, dynamic>.from(item))
+        .toList();
+  }
+  if (data is Map) {
+    final value = Map<String, dynamic>.from(data);
+    for (final key in const [
+      'items',
+      'members',
+      'events',
+      'dates',
+      'leagues',
+      'sections',
+    ]) {
+      if (value[key] is List) return _records(value[key]);
+    }
+    return [value];
+  }
+  return const [];
+}
+
+class _OverviewList extends StatelessWidget {
+  const _OverviewList({required this.records, required this.icon});
+  final List<Map<String, dynamic>> records;
+  final IconData icon;
+
+  @override
+  Widget build(BuildContext context) => Column(
+    children: records.expand((record) {
+      final title =
+          _first(record, const [
+            'title',
+            'name',
+            'label',
+            'fullName',
+            'subject',
+          ]) ??
+          'Eintrag';
+      final subtitle = _summary(record, title);
+      return [
+        ListTile(
+          leading: Icon(icon, color: AppColors.green),
+          title: Text(title),
+          subtitle: subtitle == null
+              ? null
+              : Text(subtitle, maxLines: 2, overflow: TextOverflow.ellipsis),
+        ),
+        const Divider(height: 1),
+      ];
+    }).toList(),
+  );
+}
+
+class _EmptyOverview extends StatelessWidget {
+  const _EmptyOverview({required this.icon});
+  final IconData icon;
+  @override
+  Widget build(BuildContext context) => Center(
+    child: Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Icon(icon, size: 34, color: AppColors.green),
+        const SizedBox(height: 12),
+        const Text('Keine Einträge vorhanden.'),
+      ],
+    ),
+  );
+}
+
+String? _first(Map<String, dynamic> data, List<String> keys) {
+  for (final key in keys) {
+    final value = data[key];
+    if (value != null && value.toString().trim().isNotEmpty) {
+      return value.toString();
+    }
+  }
+  final firstName = data['firstName']?.toString();
+  final lastName = data['lastName']?.toString();
+  if (firstName != null || lastName != null) {
+    return [firstName, lastName].whereType<String>().join(' ');
+  }
+  return null;
+}
+
+String? _summary(Map<String, dynamic> data, String title) {
+  final values = <String>[];
+  for (final key in const [
+    'date',
+    'startDate',
+    'startTime',
+    'email',
+    'status',
+    'meta',
+    'value',
+  ]) {
+    final value = data[key];
+    if (value != null && value.toString() != title) {
+      values.add(value.toString());
+    }
+  }
+  return values.isEmpty ? null : values.join(' · ');
+}

backend/desktop-app/lib/features/shell/presentation/app_shell.dart

@@ -0,0 +1,663 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/network/api_client.dart';
+import '../../../core/theme/app_theme.dart';
+import '../../../core/widgets/product_mark.dart';
+import '../../overview/presentation/club_overview_page.dart';
+
+class AppShell extends StatefulWidget {
+  const AppShell({super.key, this.onLogout, this.api, this.clubId});
+  final VoidCallback? onLogout;
+  final ApiClient? api;
+  final int? clubId;
+
+  @override
+  State<AppShell> createState() => _AppShellState();
+}
+
+class _AppShellState extends State<AppShell> {
+  Product _product = Product.trainer;
+  int _selectedIndex = 0;
+
+  ProductDefinition get _definition => ProductDefinition.forProduct(_product);
+
+  void _changeProduct(Product product) {
+    setState(() {
+      _product = product;
+      _selectedIndex = 0;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final definition = _definition;
+    final page = definition.pages[_selectedIndex];
+    return Scaffold(
+      body: LayoutBuilder(
+        builder: (context, constraints) {
+          final compact = constraints.maxWidth < 920;
+          return Row(
+            children: [
+              _NavigationRail(
+                definition: definition,
+                selectedIndex: _selectedIndex,
+                compact: compact,
+                onSelected: (value) => setState(() => _selectedIndex = value),
+              ),
+              Expanded(
+                child: Column(
+                  children: [
+                    _TopBar(
+                      definition: definition,
+                      compact: compact,
+                      onProductSelected: _changeProduct,
+                      onLogout: widget.onLogout,
+                    ),
+                    Expanded(
+                      child: _Content(
+                        page: page,
+                        product: definition,
+                        api: widget.api,
+                        clubId: widget.clubId,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          );
+        },
+      ),
+    );
+  }
+}
+
+enum Product { trainer, club, player }
+
+class ProductDefinition {
+  const ProductDefinition({
+    required this.product,
+    required this.name,
+    required this.contextLabel,
+    required this.contextName,
+    required this.contextIcon,
+    required this.pages,
+    required this.settingsLabel,
+  });
+
+  final Product product;
+  final String name;
+  final String contextLabel;
+  final String contextName;
+  final IconData contextIcon;
+  final List<PageDefinition> pages;
+  final String settingsLabel;
+
+  static ProductDefinition forProduct(Product product) => switch (product) {
+    Product.trainer => const ProductDefinition(
+      product: Product.trainer,
+      name: 'Trainings-Tagebuch',
+      contextLabel: 'Trainerbereich',
+      contextName: 'TTC Musterstadt',
+      contextIcon: Icons.sports_tennis_outlined,
+      settingsLabel: 'Einstellungen',
+      pages: [
+        PageDefinition(
+          'Start',
+          'Dein Überblick für heute.',
+          Icons.home_outlined,
+          'Hier entsteht dein persönlicher Trainingsüberblick.',
+        ),
+        PageDefinition(
+          'Training',
+          'Einheiten planen und Teilnahme begleiten.',
+          Icons.sports_tennis_outlined,
+          'Noch keine Trainingseinheiten zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Mitglieder',
+          'Spielerinnen und Spieler im Blick.',
+          Icons.groups_outlined,
+          'Noch keine Mitglieder zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Kalender',
+          'Termine für Training und Verein.',
+          Icons.calendar_month_outlined,
+          'Noch keine Termine zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Spielplan',
+          'Begegnungen, Ergebnisse und Tabellen.',
+          Icons.sports_score_outlined,
+          'Noch keine Spiele zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Turniere & Statistik',
+          'Leistung und Wettkämpfe nachvollziehen.',
+          Icons.query_stats_outlined,
+          'Noch keine Turnier- oder Statistikdaten zum Anzeigen.',
+        ),
+      ],
+    ),
+    Product.club => const ProductDefinition(
+      product: Product.club,
+      name: 'TT Verein',
+      contextLabel: 'Vereinsverwaltung',
+      contextName: 'TTC Musterstadt',
+      contextIcon: Icons.location_city_outlined,
+      settingsLabel: 'Verein einstellen',
+      pages: [
+        PageDefinition(
+          'Start',
+          'Alles Wichtige aus deinem Verein.',
+          Icons.home_outlined,
+          'Hier entsteht dein Vereinsüberblick.',
+        ),
+        PageDefinition(
+          'Mitglieder',
+          'Menschen, Rollen und Mitgliedschaften.',
+          Icons.groups_outlined,
+          'Noch keine Mitglieder zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Kalender & Termine',
+          'Veranstaltungen und Vereinsalltag koordinieren.',
+          Icons.calendar_month_outlined,
+          'Noch keine Termine zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Kommunikation',
+          'Neuigkeiten und Nachrichten im Verein.',
+          Icons.forum_outlined,
+          'Noch keine Nachrichten zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Aufgaben',
+          'Was im Verein als Nächstes ansteht.',
+          Icons.task_alt_outlined,
+          'Noch keine Aufgaben zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Finanzen',
+          'Beiträge und Vereinsfinanzen im Überblick.',
+          Icons.account_balance_wallet_outlined,
+          'Noch keine Finanzdaten zum Anzeigen.',
+        ),
+      ],
+    ),
+    Product.player => const ProductDefinition(
+      product: Product.player,
+      name: 'Mein TT',
+      contextLabel: 'Mein Tischtennis',
+      contextName: 'Torsten Muster',
+      contextIcon: Icons.person_outline_rounded,
+      settingsLabel: 'Persönliche Einstellungen',
+      pages: [
+        PageDefinition(
+          'Start',
+          'Dein persönlicher Tischtennis-Alltag.',
+          Icons.home_outlined,
+          'Hier entsteht dein persönlicher Überblick.',
+        ),
+        PageDefinition(
+          'Kalender',
+          'Deine Trainings, Spiele und Termine.',
+          Icons.calendar_month_outlined,
+          'Noch keine Termine zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Verknüpfte Konten',
+          'Deine verbundenen TT-Zugänge.',
+          Icons.link_outlined,
+          'Noch keine Konten zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Bestellungen',
+          'Deine Bestellungen und Anfragen.',
+          Icons.receipt_long_outlined,
+          'Noch keine Bestellungen zum Anzeigen.',
+        ),
+        PageDefinition(
+          'Persönliche Einstellungen',
+          'Dein Profil und deine Präferenzen.',
+          Icons.settings_outlined,
+          'Noch keine Einstellungen zum Anzeigen.',
+        ),
+      ],
+    ),
+  };
+}
+
+class PageDefinition {
+  const PageDefinition(
+    this.title,
+    this.description,
+    this.icon,
+    this.emptyLabel,
+  );
+
+  final String title;
+  final String description;
+  final IconData icon;
+  final String emptyLabel;
+}
+
+class _NavigationRail extends StatelessWidget {
+  const _NavigationRail({
+    required this.definition,
+    required this.selectedIndex,
+    required this.compact,
+    required this.onSelected,
+  });
+
+  final ProductDefinition definition;
+  final int selectedIndex;
+  final bool compact;
+  final ValueChanged<int> onSelected;
+
+  @override
+  Widget build(BuildContext context) => Container(
+    width: compact ? 76 : 242,
+    color: AppColors.greenDark,
+    child: Column(
+      children: [
+        Padding(
+          padding: EdgeInsets.fromLTRB(compact ? 16 : 24, 25, 16, 21),
+          child: Row(
+            children: [
+              const ProductMark(light: true, size: 33),
+              if (!compact) const SizedBox(width: 10),
+              if (!compact)
+                Expanded(
+                  child: Text(
+                    definition.name,
+                    overflow: TextOverflow.ellipsis,
+                    style: const TextStyle(
+                      color: Colors.white,
+                      fontWeight: FontWeight.w700,
+                      fontSize: 16,
+                    ),
+                  ),
+                ),
+            ],
+          ),
+        ),
+        const Divider(height: 1, color: Color(0x337FFFFF)),
+        const SizedBox(height: 12),
+        Expanded(
+          child: ListView.builder(
+            padding: EdgeInsets.zero,
+            itemCount: definition.pages.length,
+            itemBuilder: (context, index) => _RailItem(
+              item: definition.pages[index],
+              selected: selectedIndex == index,
+              compact: compact,
+              onTap: () => onSelected(index),
+            ),
+          ),
+        ),
+        const Divider(height: 1, color: Color(0x337FFFFF)),
+        _RailItem(
+          item: PageDefinition(
+            definition.settingsLabel,
+            '',
+            Icons.settings_outlined,
+            '',
+          ),
+          compact: compact,
+          onTap: () {},
+        ),
+        const SizedBox(height: 16),
+      ],
+    ),
+  );
+}
+
+class _RailItem extends StatelessWidget {
+  const _RailItem({
+    required this.item,
+    required this.compact,
+    required this.onTap,
+    this.selected = false,
+  });
+
+  final PageDefinition item;
+  final bool compact;
+  final bool selected;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final foreground = selected ? Colors.white : const Color(0xD9FFFFFF);
+    return Padding(
+      padding: EdgeInsets.symmetric(horizontal: compact ? 10 : 12, vertical: 2),
+      child: Material(
+        color: selected ? const Color(0x2AFFFFFF) : Colors.transparent,
+        borderRadius: BorderRadius.circular(7),
+        child: InkWell(
+          borderRadius: BorderRadius.circular(7),
+          onTap: onTap,
+          child: Tooltip(
+            message: compact ? item.title : '',
+            child: Padding(
+              padding: EdgeInsets.symmetric(
+                horizontal: compact ? 0 : 12,
+                vertical: 12,
+              ),
+              child: Row(
+                mainAxisAlignment: compact
+                    ? MainAxisAlignment.center
+                    : MainAxisAlignment.start,
+                children: [
+                  Icon(item.icon, size: 21, color: foreground),
+                  if (!compact) const SizedBox(width: 13),
+                  if (!compact)
+                    Expanded(
+                      child: Text(
+                        item.title,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          color: foreground,
+                          fontWeight: selected
+                              ? FontWeight.w700
+                              : FontWeight.w500,
+                          fontSize: 14,
+                        ),
+                      ),
+                    ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _TopBar extends StatelessWidget {
+  const _TopBar({
+    required this.definition,
+    required this.compact,
+    required this.onProductSelected,
+    this.onLogout,
+  });
+
+  final ProductDefinition definition;
+  final bool compact;
+  final ValueChanged<Product> onProductSelected;
+  final VoidCallback? onLogout;
+
+  @override
+  Widget build(BuildContext context) => Container(
+    height: 74,
+    padding: EdgeInsets.symmetric(horizontal: compact ? 20 : 32),
+    decoration: const BoxDecoration(
+      color: AppColors.surface,
+      border: Border(bottom: BorderSide(color: AppColors.line)),
+    ),
+    child: Row(
+      children: [
+        _ProductSwitcher(
+          definition: definition,
+          compact: compact,
+          onSelected: onProductSelected,
+        ),
+        const Spacer(),
+        IconButton(
+          onPressed: () {},
+          tooltip: 'Benachrichtigungen',
+          icon: const Badge(
+            smallSize: 8,
+            child: Icon(Icons.notifications_none_rounded),
+          ),
+        ),
+        const SizedBox(width: 10),
+        IconButton(
+          onPressed: onLogout,
+          tooltip: 'Abmelden',
+          icon: const Icon(Icons.logout_rounded),
+        ),
+        const SizedBox(width: 4),
+        const CircleAvatar(
+          radius: 17,
+          backgroundColor: Color(0xFFDDECE5),
+          child: Text(
+            'TM',
+            style: TextStyle(
+              fontSize: 12,
+              color: AppColors.green,
+              fontWeight: FontWeight.w700,
+            ),
+          ),
+        ),
+      ],
+    ),
+  );
+}
+
+class _ProductSwitcher extends StatelessWidget {
+  const _ProductSwitcher({
+    required this.definition,
+    required this.compact,
+    required this.onSelected,
+  });
+
+  final ProductDefinition definition;
+  final bool compact;
+  final ValueChanged<Product> onSelected;
+
+  @override
+  Widget build(BuildContext context) => PopupMenuButton<Product>(
+    tooltip: 'Produkt wechseln',
+    onSelected: onSelected,
+    itemBuilder: (context) => Product.values.map((product) {
+      final item = ProductDefinition.forProduct(product);
+      return PopupMenuItem(
+        value: product,
+        child: _ProductMenuItem(
+          definition: item,
+          active: product == definition.product,
+        ),
+      );
+    }).toList(),
+    child: Semantics(
+      button: true,
+      label: 'Produktkontext: ${definition.name}. Produkt wechseln',
+      child: Container(
+        constraints: const BoxConstraints(maxWidth: 340),
+        padding: const EdgeInsets.fromLTRB(10, 8, 8, 8),
+        decoration: BoxDecoration(
+          border: Border.all(color: AppColors.line),
+          borderRadius: BorderRadius.circular(8),
+        ),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(definition.contextIcon, size: 20, color: AppColors.green),
+            if (!compact) const SizedBox(width: 9),
+            if (!compact)
+              Flexible(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Text(
+                      'Produkt',
+                      style: Theme.of(context).textTheme.bodySmall,
+                    ),
+                    Text(
+                      definition.name,
+                      overflow: TextOverflow.ellipsis,
+                      style: const TextStyle(
+                        fontSize: 14,
+                        fontWeight: FontWeight.w700,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            const SizedBox(width: 5),
+            const Icon(
+              Icons.unfold_more_rounded,
+              size: 19,
+              color: AppColors.muted,
+            ),
+          ],
+        ),
+      ),
+    ),
+  );
+}
+
+class _ProductMenuItem extends StatelessWidget {
+  const _ProductMenuItem({required this.definition, required this.active});
+  final ProductDefinition definition;
+  final bool active;
+
+  @override
+  Widget build(BuildContext context) => SizedBox(
+    width: 270,
+    child: Row(
+      children: [
+        Icon(
+          definition.contextIcon,
+          color: active ? AppColors.green : AppColors.muted,
+        ),
+        const SizedBox(width: 12),
+        Expanded(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Text(
+                definition.name,
+                style: TextStyle(
+                  fontWeight: active ? FontWeight.w700 : FontWeight.w500,
+                ),
+              ),
+              const SizedBox(height: 2),
+              Text(
+                definition.contextLabel,
+                style: Theme.of(context).textTheme.bodySmall,
+              ),
+            ],
+          ),
+        ),
+        if (active)
+          const Icon(Icons.check_rounded, size: 19, color: AppColors.green),
+      ],
+    ),
+  );
+}
+
+class _Content extends StatelessWidget {
+  const _Content({
+    required this.page,
+    required this.product,
+    this.api,
+    this.clubId,
+  });
+  final PageDefinition page;
+  final ProductDefinition product;
+  final ApiClient? api;
+  final int? clubId;
+
+  @override
+  Widget build(BuildContext context) => SingleChildScrollView(
+    padding: const EdgeInsets.fromLTRB(40, 38, 40, 40),
+    child: ConstrainedBox(
+      constraints: const BoxConstraints(maxWidth: 1120),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            product.name,
+            style: Theme.of(context).textTheme.bodySmall?.copyWith(
+              color: AppColors.green,
+              fontWeight: FontWeight.w700,
+              letterSpacing: .4,
+            ),
+          ),
+          const SizedBox(height: 6),
+          Text(page.title, style: Theme.of(context).textTheme.displaySmall),
+          const SizedBox(height: 8),
+          Text(
+            page.description,
+            style: Theme.of(
+              context,
+            ).textTheme.bodyLarge?.copyWith(color: AppColors.muted),
+          ),
+          const SizedBox(height: 42),
+          _pageBody(context),
+        ],
+      ),
+    ),
+  );
+
+  Widget _pageBody(BuildContext context) {
+    final kind = _overviewKind();
+    if (kind != null && api != null && clubId != null) {
+      return Container(
+        width: double.infinity,
+        constraints: const BoxConstraints(minHeight: 300),
+        padding: const EdgeInsets.all(24),
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          border: Border.all(color: AppColors.line),
+          borderRadius: BorderRadius.circular(10),
+        ),
+        child: ClubOverviewPage(
+          key: ValueKey('${kind.name}-$clubId'),
+          kind: kind,
+          clubId: clubId!,
+          title: page.title,
+          description: page.description,
+          icon: page.icon,
+          api: api!,
+        ),
+      );
+    }
+    return Container(
+      width: double.infinity,
+      constraints: const BoxConstraints(minHeight: 300),
+      padding: const EdgeInsets.all(32),
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        border: Border.all(color: AppColors.line),
+        borderRadius: BorderRadius.circular(10),
+      ),
+      child: Center(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(page.icon, color: AppColors.green, size: 28),
+            const SizedBox(height: 18),
+            Text(
+              'Bereit, wenn du es bist.',
+              style: Theme.of(context).textTheme.titleLarge,
+            ),
+            const SizedBox(height: 7),
+            Text(page.emptyLabel, textAlign: TextAlign.center),
+          ],
+        ),
+      ),
+    );
+  }
+
+  ClubOverviewKind? _overviewKind() {
+    if (page.title == 'Start') {
+      return product.product == Product.player
+          ? ClubOverviewKind.memberDashboard
+          : ClubOverviewKind.dashboard;
+    }
+    return switch (page.title) {
+      'Training' => ClubOverviewKind.training,
+      'Mitglieder' => ClubOverviewKind.members,
+      'Kalender' || 'Kalender & Termine' => ClubOverviewKind.calendar,
+      'Spielplan' => ClubOverviewKind.schedule,
+      _ => null,
+    };
+  }
+}

backend/desktop-app/lib/main.dart

@@ -0,0 +1,142 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'core/config/app_environment.dart';
+import 'core/network/api_client.dart';
+import 'core/session/app_session.dart';
+import 'core/theme/app_theme.dart';
+import 'data/auth/auth_repository.dart';
+import 'data/auth/token_storage.dart';
+import 'data/clubs/club_repository.dart';
+import 'features/auth/presentation/login_page.dart';
+import 'features/auth/presentation/password_reset_pages.dart';
+import 'features/clubs/presentation/club_selection_page.dart';
+import 'features/shell/presentation/app_shell.dart';
+
+void main() {
+  WidgetsFlutterBinding.ensureInitialized();
+  final tokens = TokenStorage();
+  final api = ApiClient(
+    environment: AppEnvironment.fromBuildConfiguration(),
+    tokenStorage: tokens,
+  );
+  final session = AppSession(
+    auth: AuthRepository(api),
+    clubs: ClubRepository(api),
+    tokens: tokens,
+  );
+  runApp(
+    ProviderScope(
+      child: TtTagebuchApp(session: session, api: api),
+    ),
+  );
+}
+
+class TtTagebuchApp extends StatefulWidget {
+  const TtTagebuchApp({super.key, required this.session, required this.api});
+  final AppSession session;
+  final ApiClient api;
+
+  @override
+  State<TtTagebuchApp> createState() => _TtTagebuchAppState();
+}
+
+class _TtTagebuchAppState extends State<TtTagebuchApp> {
+  bool _forgotPassword = false;
+  bool _resetSent = false;
+
+  @override
+  void initState() {
+    super.initState();
+    widget.session.restore();
+  }
+
+  void showForgotPassword() => setState(() => _forgotPassword = true);
+  void markResetSent() => setState(() => _resetSent = true);
+  void returnToLogin() => setState(() {
+    _forgotPassword = false;
+    _resetSent = false;
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'TT-Tagebuch',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.light,
+      home: AnimatedBuilder(
+        animation: widget.session,
+        builder: (context, _) =>
+            _SessionPage(session: widget.session, state: this, api: widget.api),
+      ),
+    );
+  }
+}
+
+class _SessionPage extends StatelessWidget {
+  const _SessionPage({
+    required this.session,
+    required this.state,
+    required this.api,
+  });
+  final AppSession session;
+  final _TtTagebuchAppState state;
+  final ApiClient api;
+  @override
+  Widget build(BuildContext context) {
+    if (session.status == SessionStatus.starting) {
+      return const Scaffold(body: Center(child: CircularProgressIndicator()));
+    }
+    if (session.status == SessionStatus.selectingClub) {
+      return ClubSelectionPage(
+        clubs: session.clubs
+            .map(
+              (club) => ClubViewModel(
+                id: '${club.id}',
+                name: club.name,
+                subtitle: 'Vereinszugang',
+              ),
+            )
+            .toList(),
+        selectedClubId: session.activeClub == null
+            ? null
+            : '${session.activeClub!.id}',
+        isLoading: session.busy,
+        errorMessage: session.errorMessage,
+        onSelected: (id) => session.chooseClub(int.parse(id)),
+        onContinue: () {
+          if (session.activeClub != null) {
+            session.selectClub(session.activeClub!.id);
+          }
+        },
+        onRetry: session.restore,
+        onLogout: session.logout,
+      );
+    }
+    if (session.status == SessionStatus.ready) {
+      return AppShell(
+        onLogout: session.logout,
+        api: api,
+        clubId: session.activeClub!.id,
+      );
+    }
+    if (state._forgotPassword) {
+      return PasswordResetRequestPage(
+        isLoading: session.busy,
+        errorMessage: session.errorMessage,
+        isSuccess: state._resetSent,
+        onRequestReset: (email) async {
+          await session.requestPasswordReset(email);
+          state.markResetSent();
+        },
+        onBackToLogin: state.returnToLogin,
+      );
+    }
+    return LoginPage(
+      isLoading: session.busy,
+      errorMessage: session.errorMessage,
+      onSignIn: session.signIn,
+      onForgotPassword: state.showForgotPassword,
+    );
+  }
+}

backend/desktop-app/lib/presentation/README.md

@@ -0,0 +1,4 @@
+# Presentation
+
+Wiederverwendbare, featureübergreifende Präsentationsbausteine liegen hier.
+Feature-spezifische Seiten verbleiben bei ihrem jeweiligen Feature.

backend/desktop-app/linux/.gitignore

@@ -0,0 +1 @@
+flutter/ephemeral

backend/desktop-app/linux/CMakeLists.txt

@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "tt_desktop")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "de.tttagebuch.tt_desktop")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()

backend/desktop-app/linux/flutter/CMakeLists.txt

@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)

backend/desktop-app/linux/flutter/generated_plugin_registrant.cc

@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+#include <flutter_secure_storage_linux/flutter_secure_storage_linux_plugin.h>
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+  g_autoptr(FlPluginRegistrar) flutter_secure_storage_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterSecureStorageLinuxPlugin");
+  flutter_secure_storage_linux_plugin_register_with_registrar(flutter_secure_storage_linux_registrar);
+}

backend/desktop-app/linux/flutter/generated_plugin_registrant.h

@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_

backend/desktop-app/linux/flutter/generated_plugins.cmake

@@ -0,0 +1,25 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+  flutter_secure_storage_linux
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+  jni
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)

backend/desktop-app/linux/runner/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")

backend/desktop-app/linux/runner/main.cc

@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}

backend/desktop-app/linux/runner/my_application.cc

@@ -0,0 +1,148 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Called when first Flutter frame received.
+static void first_frame_cb(MyApplication* self, FlView* view) {
+  gtk_widget_show(gtk_widget_get_toplevel(GTK_WIDGET(view)));
+}
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "tt_desktop");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "tt_desktop");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(
+      project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  GdkRGBA background_color;
+  // Background defaults to black, override it here if necessary, e.g. #00000000
+  // for transparent.
+  gdk_rgba_parse(&background_color, "#000000");
+  fl_view_set_background_color(view, &background_color);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  // Show the window when Flutter renders.
+  // Requires the view to be realized so we can start rendering.
+  g_signal_connect_swapped(view, "first-frame", G_CALLBACK(first_frame_cb),
+                           self);
+  gtk_widget_realize(GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application,
+                                                  gchar*** arguments,
+                                                  int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+    g_warning("Failed to register: %s", error->message);
+    *exit_status = 1;
+    return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  // MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  // MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line =
+      my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID, "flags",
+                                     G_APPLICATION_NON_UNIQUE, nullptr));
+}

backend/desktop-app/linux/runner/my_application.h

@@ -0,0 +1,21 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication,
+                     my_application,
+                     MY,
+                     APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_

backend/desktop-app/macos/.gitignore

@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/

backend/desktop-app/macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"

backend/desktop-app/macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"

backend/desktop-app/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -0,0 +1,14 @@
+//
+//  Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+import flutter_secure_storage_darwin
+import shared_preferences_foundation
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FlutterSecureStorageDarwinPlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStorageDarwinPlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
+}

backend/desktop-app/macos/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,729 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXAggregateTarget section */
+		33CC111A2044C6BA0003C045 /* Flutter Assemble */ = {
+			isa = PBXAggregateTarget;
+			buildConfigurationList = 33CC111B2044C6BA0003C045 /* Build configuration list for PBXAggregateTarget "Flutter Assemble" */;
+			buildPhases = (
+				33CC111E2044C6BF0003C045 /* ShellScript */,
+			);
+			dependencies = (
+			);
+			name = "Flutter Assemble";
+			productName = FLX;
+		};
+/* End PBXAggregateTarget section */
+
+/* Begin PBXBuildFile section */
+		331C80D8294CF71000263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C80D7294CF71000263BE5 /* RunnerTests.swift */; };
+		335BBD1B22A9A15E00E9071D /* GeneratedPluginRegistrant.swift in Sources */ = {isa = PBXBuildFile; fileRef = 335BBD1A22A9A15E00E9071D /* GeneratedPluginRegistrant.swift */; };
+		33CC10F12044A3C60003C045 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC10F02044A3C60003C045 /* AppDelegate.swift */; };
+		33CC10F32044A3C60003C045 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F22044A3C60003C045 /* Assets.xcassets */; };
+		33CC10F62044A3C60003C045 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F42044A3C60003C045 /* MainMenu.xib */; };
+		33CC11132044BFA00003C045 /* MainFlutterWindow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC11122044BFA00003C045 /* MainFlutterWindow.swift */; };
+		78A318202AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage in Frameworks */ = {isa = PBXBuildFile; productRef = 78A3181F2AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C80D9294CF71000263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 33CC10EC2044A3C60003C045;
+			remoteInfo = Runner;
+		};
+		33CC111F2044C79F0003C045 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 33CC111A2044C6BA0003C045;
+			remoteInfo = FLX;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		33CC110E2044A8840003C045 /* Bundle Framework */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Bundle Framework";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		331C80D5294CF71000263BE5 /* RunnerTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = RunnerTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		331C80D7294CF71000263BE5 /* RunnerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RunnerTests.swift; sourceTree = "<group>"; };
+		333000ED22D3DE5D00554162 /* Warnings.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Warnings.xcconfig; sourceTree = "<group>"; };
+		335BBD1A22A9A15E00E9071D /* GeneratedPluginRegistrant.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = GeneratedPluginRegistrant.swift; sourceTree = "<group>"; };
+		33CC10ED2044A3C60003C045 /* tt_desktop.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "tt_desktop.app"; sourceTree = BUILT_PRODUCTS_DIR; };
+		33CC10F02044A3C60003C045 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
+		33CC10F22044A3C60003C045 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; name = Assets.xcassets; path = Runner/Assets.xcassets; sourceTree = "<group>"; };
+		33CC10F52044A3C60003C045 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = Base.lproj/MainMenu.xib; sourceTree = "<group>"; };
+		33CC10F72044A3C60003C045 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; name = Info.plist; path = Runner/Info.plist; sourceTree = "<group>"; };
+		33CC11122044BFA00003C045 /* MainFlutterWindow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MainFlutterWindow.swift; sourceTree = "<group>"; };
+		33CEB47222A05771004F2AC0 /* Flutter-Debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = "Flutter-Debug.xcconfig"; sourceTree = "<group>"; };
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+		33CEB47722A0578A004F2AC0 /* Flutter-Generated.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = "Flutter-Generated.xcconfig"; path = "ephemeral/Flutter-Generated.xcconfig"; sourceTree = "<group>"; };
+		33E51913231747F40026EE4D /* DebugProfile.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = DebugProfile.entitlements; sourceTree = "<group>"; };
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+		33E5194F232828860026EE4D /* AppInfo.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppInfo.xcconfig; sourceTree = "<group>"; };
+		78E0A7A72DC9AD7400C4905E /* FlutterGeneratedPluginSwiftPackage */ = {isa = PBXFileReference; lastKnownFileType = wrapper; name = FlutterGeneratedPluginSwiftPackage; path = ephemeral/Packages/FlutterGeneratedPluginSwiftPackage; sourceTree = "<group>"; };
+		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Release.xcconfig; sourceTree = "<group>"; };
+		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; path = Debug.xcconfig; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		331C80D2294CF70F00263BE5 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		33CC10EA2044A3C60003C045 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				78A318202AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		331C80D6294CF71000263BE5 /* RunnerTests */ = {
+			isa = PBXGroup;
+			children = (
+				331C80D7294CF71000263BE5 /* RunnerTests.swift */,
+			);
+			path = RunnerTests;
+			sourceTree = "<group>";
+		};
+		33BA886A226E78AF003329D5 /* Configs */ = {
+			isa = PBXGroup;
+			children = (
+				33E5194F232828860026EE4D /* AppInfo.xcconfig */,
+				9740EEB21CF90195004384FC /* Debug.xcconfig */,
+				7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
+				333000ED22D3DE5D00554162 /* Warnings.xcconfig */,
+			);
+			path = Configs;
+			sourceTree = "<group>";
+		};
+		33CC10E42044A3C60003C045 = {
+			isa = PBXGroup;
+			children = (
+				33FAB671232836740065AC1E /* Runner */,
+				33CEB47122A05771004F2AC0 /* Flutter */,
+				331C80D6294CF71000263BE5 /* RunnerTests */,
+				33CC10EE2044A3C60003C045 /* Products */,
+				D73912EC22F37F3D000D13A0 /* Frameworks */,
+			);
+			sourceTree = "<group>";
+		};
+		33CC10EE2044A3C60003C045 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				33CC10ED2044A3C60003C045 /* tt_desktop.app */,
+				331C80D5294CF71000263BE5 /* RunnerTests.xctest */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		33CC11242044D66E0003C045 /* Resources */ = {
+			isa = PBXGroup;
+			children = (
+				33CC10F22044A3C60003C045 /* Assets.xcassets */,
+				33CC10F42044A3C60003C045 /* MainMenu.xib */,
+				33CC10F72044A3C60003C045 /* Info.plist */,
+			);
+			name = Resources;
+			path = ..;
+			sourceTree = "<group>";
+		};
+		33CEB47122A05771004F2AC0 /* Flutter */ = {
+			isa = PBXGroup;
+			children = (
+				78E0A7A72DC9AD7400C4905E /* FlutterGeneratedPluginSwiftPackage */,
+				335BBD1A22A9A15E00E9071D /* GeneratedPluginRegistrant.swift */,
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+				33CEB47722A0578A004F2AC0 /* Flutter-Generated.xcconfig */,
+			);
+			path = Flutter;
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
+				33CC10F02044A3C60003C045 /* AppDelegate.swift */,
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+				33E51914231749380026EE4D /* Release.entitlements */,
+				33CC11242044D66E0003C045 /* Resources */,
+				33BA886A226E78AF003329D5 /* Configs */,
+			);
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+		};
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+			children = (
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+			);
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+			);
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+			);
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+			productName = RunnerTests;
+			productReference = 331C80D5294CF71000263BE5 /* RunnerTests.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
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+			isa = PBXNativeTarget;
+			buildConfigurationList = 33CC10FB2044A3C60003C045 /* Build configuration list for PBXNativeTarget "Runner" */;
+			buildPhases = (
+				33CC10E92044A3C60003C045 /* Sources */,
+				33CC10EA2044A3C60003C045 /* Frameworks */,
+				33CC10EB2044A3C60003C045 /* Resources */,
+				33CC110E2044A8840003C045 /* Bundle Framework */,
+				3399D490228B24CF009A79C7 /* ShellScript */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				33CC11202044C79F0003C045 /* PBXTargetDependency */,
+			);
+			name = Runner;
+			packageProductDependencies = (
+				78A3181F2AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage */,
+			);
+			productName = Runner;
+			productReference = 33CC10ED2044A3C60003C045 /* tt_desktop.app */;
+			productType = "com.apple.product-type.application";
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+
+/* Begin PBXProject section */
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+				BuildIndependentTargetsInParallel = YES;
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+				TargetAttributes = {
+					331C80D4294CF70F00263BE5 = {
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+			buildConfigurationList = 33CC10E82044A3C60003C045 /* Build configuration list for PBXProject "Runner" */;
+			compatibilityVersion = "Xcode 9.3";
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+			knownRegions = (
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+			);
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+			packageReferences = (
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+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
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+				331C80D4294CF70F00263BE5 /* RunnerTests */,
+				33CC111A2044C6BA0003C045 /* Flutter Assemble */,
+			);
+		};
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+
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+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
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+
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+			files = (
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@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

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+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

backend/desktop-app/macos/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

backend/desktop-app/macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

backend/desktop-app/macos/Runner/AppDelegate.swift

@@ -0,0 +1,13 @@
+import Cocoa
+import FlutterMacOS
+
+@main
+class AppDelegate: FlutterAppDelegate {
+  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+    return true
+  }
+
+  override func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {
+    return true
+  }
+}

backend/desktop-app/macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,68 @@
+{
+  "images" : [
+    {
+      "size" : "16x16",
+      "idiom" : "mac",
+      "filename" : "app_icon_16.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "16x16",
+      "idiom" : "mac",
+      "filename" : "app_icon_32.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "32x32",
+      "idiom" : "mac",
+      "filename" : "app_icon_32.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "32x32",
+      "idiom" : "mac",
+      "filename" : "app_icon_64.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "128x128",
+      "idiom" : "mac",
+      "filename" : "app_icon_128.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "128x128",
+      "idiom" : "mac",
+      "filename" : "app_icon_256.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "256x256",
+      "idiom" : "mac",
+      "filename" : "app_icon_256.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "256x256",
+      "idiom" : "mac",
+      "filename" : "app_icon_512.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "app_icon_512.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "app_icon_1024.png",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

backend/desktop-app/macos/Runner/Base.lproj/MainMenu.xib

@@ -0,0 +1,343 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14490.70"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="NSApplication">
+            <connections>
+                <outlet property="delegate" destination="Voe-Tx-rLC" id="GzC-gU-4Uq"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application" customClass="NSObject"/>
+        <customObject id="Voe-Tx-rLC" customClass="AppDelegate" customModule="Runner" customModuleProvider="target">
+            <connections>
+                <outlet property="applicationMenu" destination="uQy-DD-JDr" id="XBo-yE-nKs"/>
+                <outlet property="mainFlutterWindow" destination="QvC-M9-y7g" id="gIp-Ho-8D9"/>
+            </connections>
+        </customObject>
+        <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
+        <menu title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
+            <items>
+                <menuItem title="APP_NAME" id="1Xt-HY-uBw">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="APP_NAME" systemMenu="apple" id="uQy-DD-JDr">
+                        <items>
+                            <menuItem title="About APP_NAME" id="5kV-Vb-QxS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="orderFrontStandardAboutPanel:" target="-1" id="Exp-CZ-Vem"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
+                            <menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW"/>
+                            <menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
+                            <menuItem title="Services" id="NMo-om-nkz">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
+                            <menuItem title="Hide APP_NAME" keyEquivalent="h" id="Olw-nP-bQN">
+                                <connections>
+                                    <action selector="hide:" target="-1" id="PnN-Uc-m68"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="hideOtherApplications:" target="-1" id="VT4-aY-XCT"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Show All" id="Kd2-mp-pUS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="unhideAllApplications:" target="-1" id="Dhg-Le-xox"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
+                            <menuItem title="Quit APP_NAME" keyEquivalent="q" id="4sb-4s-VLi">
+                                <connections>
+                                    <action selector="terminate:" target="-1" id="Te7-pn-YzF"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Edit" id="5QF-Oa-p0T">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Edit" id="W48-6f-4Dl">
+                        <items>
+                            <menuItem title="Undo" keyEquivalent="z" id="dRJ-4n-Yzg">
+                                <connections>
+                                    <action selector="undo:" target="-1" id="M6e-cu-g7V"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Redo" keyEquivalent="Z" id="6dh-zS-Vam">
+                                <connections>
+                                    <action selector="redo:" target="-1" id="oIA-Rs-6OD"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="WRV-NI-Exz"/>
+                            <menuItem title="Cut" keyEquivalent="x" id="uRl-iY-unG">
+                                <connections>
+                                    <action selector="cut:" target="-1" id="YJe-68-I9s"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Copy" keyEquivalent="c" id="x3v-GG-iWU">
+                                <connections>
+                                    <action selector="copy:" target="-1" id="G1f-GL-Joy"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste" keyEquivalent="v" id="gVA-U4-sdL">
+                                <connections>
+                                    <action selector="paste:" target="-1" id="UvS-8e-Qdg"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste and Match Style" keyEquivalent="V" id="WeT-3V-zwk">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="pasteAsPlainText:" target="-1" id="cEh-KX-wJQ"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Delete" id="pa3-QI-u2k">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="delete:" target="-1" id="0Mk-Ml-PaM"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Select All" keyEquivalent="a" id="Ruw-6m-B2m">
+                                <connections>
+                                    <action selector="selectAll:" target="-1" id="VNm-Mi-diN"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="uyl-h8-XO2"/>
+                            <menuItem title="Find" id="4EN-yA-p0u">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Find" id="1b7-l0-nxx">
+                                    <items>
+                                        <menuItem title="Find…" tag="1" keyEquivalent="f" id="Xz5-n4-O0W">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="cD7-Qs-BN4"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find and Replace…" tag="12" keyEquivalent="f" id="YEy-JH-Tfz">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="WD3-Gg-5AJ"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Next" tag="2" keyEquivalent="g" id="q09-fT-Sye">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="NDo-RZ-v9R"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Previous" tag="3" keyEquivalent="G" id="OwM-mh-QMV">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="HOh-sY-3ay"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Use Selection for Find" tag="7" keyEquivalent="e" id="buJ-ug-pKt">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="U76-nv-p5D"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Jump to Selection" keyEquivalent="j" id="S0p-oC-mLd">
+                                            <connections>
+                                                <action selector="centerSelectionInVisibleArea:" target="-1" id="IOG-6D-g5B"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Spelling and Grammar" id="Dv1-io-Yv7">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Spelling" id="3IN-sU-3Bg">
+                                    <items>
+                                        <menuItem title="Show Spelling and Grammar" keyEquivalent=":" id="HFo-cy-zxI">
+                                            <connections>
+                                                <action selector="showGuessPanel:" target="-1" id="vFj-Ks-hy3"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Document Now" keyEquivalent=";" id="hz2-CU-CR7">
+                                            <connections>
+                                                <action selector="checkSpelling:" target="-1" id="fz7-VC-reM"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="bNw-od-mp5"/>
+                                        <menuItem title="Check Spelling While Typing" id="rbD-Rh-wIN">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleContinuousSpellChecking:" target="-1" id="7w6-Qz-0kB"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Grammar With Spelling" id="mK6-2p-4JG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleGrammarChecking:" target="-1" id="muD-Qn-j4w"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Correct Spelling Automatically" id="78Y-hA-62v">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticSpellingCorrection:" target="-1" id="2lM-Qi-WAP"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Substitutions" id="9ic-FL-obx">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Substitutions" id="FeM-D8-WVr">
+                                    <items>
+                                        <menuItem title="Show Substitutions" id="z6F-FW-3nz">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="orderFrontSubstitutionsPanel:" target="-1" id="oku-mr-iSq"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
+                                        <menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleSmartInsertDelete:" target="-1" id="3IJ-Se-DZD"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Quotes" id="hQb-2v-fYv">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticQuoteSubstitution:" target="-1" id="ptq-xd-QOA"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Dashes" id="rgM-f4-ycn">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDashSubstitution:" target="-1" id="oCt-pO-9gS"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Links" id="cwL-P1-jid">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticLinkDetection:" target="-1" id="Gip-E3-Fov"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Data Detectors" id="tRr-pd-1PS">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDataDetection:" target="-1" id="R1I-Nq-Kbl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Text Replacement" id="HFQ-gK-NFA">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticTextReplacement:" target="-1" id="DvP-Fe-Py6"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Transformations" id="2oI-Rn-ZJC">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Transformations" id="c8a-y6-VQd">
+                                    <items>
+                                        <menuItem title="Make Upper Case" id="vmV-6d-7jI">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="uppercaseWord:" target="-1" id="sPh-Tk-edu"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Make Lower Case" id="d9M-CD-aMd">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="lowercaseWord:" target="-1" id="iUZ-b5-hil"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Capitalize" id="UEZ-Bs-lqG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="capitalizeWord:" target="-1" id="26H-TL-nsh"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Speech" id="xrE-MZ-jX0">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Speech" id="3rS-ZA-NoH">
+                                    <items>
+                                        <menuItem title="Start Speaking" id="Ynk-f8-cLZ">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="startSpeaking:" target="-1" id="654-Ng-kyl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Stop Speaking" id="Oyz-dy-DGm">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="stopSpeaking:" target="-1" id="dX8-6p-jy9"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="View" id="H8h-7b-M4v">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="View" id="HyV-fh-RgO">
+                        <items>
+                            <menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
+                                <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleFullScreen:" target="-1" id="dU3-MA-1Rq"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Window" id="aUF-d1-5bR">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
+                        <items>
+                            <menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
+                                <connections>
+                                    <action selector="performMiniaturize:" target="-1" id="VwT-WD-YPe"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Zoom" id="R4o-n2-Eq4">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="performZoom:" target="-1" id="DIl-cC-cCs"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="eu3-7i-yIM"/>
+                            <menuItem title="Bring All to Front" id="LE2-aR-0XJ">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="arrangeInFront:" target="-1" id="DRN-fu-gQh"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Help" id="EPT-qC-fAb">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Help" systemMenu="help" id="rJ0-wn-3NY"/>
+                </menuItem>
+            </items>
+            <point key="canvasLocation" x="142" y="-258"/>
+        </menu>
+        <window title="APP_NAME" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" id="QvC-M9-y7g" customClass="MainFlutterWindow" customModule="Runner" customModuleProvider="target">
+            <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+            <rect key="contentRect" x="335" y="390" width="800" height="600"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="2560" height="1577"/>
+            <view key="contentView" wantsLayer="YES" id="EiT-Mj-1SZ">
+                <rect key="frame" x="0.0" y="0.0" width="800" height="600"/>
+                <autoresizingMask key="autoresizingMask"/>
+            </view>
+        </window>
+    </objects>
+</document>

backend/desktop-app/macos/Runner/Configs/AppInfo.xcconfig

@@ -0,0 +1,14 @@
+// Application-level settings for the Runner target.
+//
+// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
+// future. If not, the values below would default to using the project name when this becomes a
+// 'flutter create' template.
+
+// The application's name. By default this is also the title of the Flutter window.
+PRODUCT_NAME = tt_desktop
+
+// The application's bundle identifier
+PRODUCT_BUNDLE_IDENTIFIER = de.tttagebuch.ttDesktop
+
+// The copyright displayed in application information
+PRODUCT_COPYRIGHT = Copyright © 2026 de.tttagebuch. All rights reserved.

backend/desktop-app/macos/Runner/Configs/Debug.xcconfig

@@ -0,0 +1,2 @@
+#include "../../Flutter/Flutter-Debug.xcconfig"
+#include "Warnings.xcconfig"

backend/desktop-app/macos/Runner/Configs/Release.xcconfig

@@ -0,0 +1,2 @@
+#include "../../Flutter/Flutter-Release.xcconfig"
+#include "Warnings.xcconfig"

backend/desktop-app/macos/Runner/Configs/Warnings.xcconfig

@@ -0,0 +1,13 @@
+WARNING_CFLAGS = -Wall -Wconditional-uninitialized -Wnullable-to-nonnull-conversion -Wmissing-method-return-type -Woverlength-strings
+GCC_WARN_UNDECLARED_SELECTOR = YES
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE
+CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
+CLANG_WARN_PRAGMA_PACK = YES
+CLANG_WARN_STRICT_PROTOTYPES = YES
+CLANG_WARN_COMMA = YES
+GCC_WARN_STRICT_SELECTOR_MATCH = YES
+CLANG_WARN_OBJC_REPEATED_USE_OF_WEAK = YES
+CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
+GCC_WARN_SHADOW = YES
+CLANG_WARN_UNREACHABLE_CODE = YES

backend/desktop-app/macos/Runner/DebugProfile.entitlements

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.cs.allow-jit</key>
+	<true/>
+	<key>com.apple.security.network.server</key>
+	<true/>
+</dict>
+</plist>

backend/desktop-app/macos/Runner/Info.plist

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>$(PRODUCT_COPYRIGHT)</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

backend/desktop-app/macos/Runner/MainFlutterWindow.swift

@@ -0,0 +1,15 @@
+import Cocoa
+import FlutterMacOS
+
+class MainFlutterWindow: NSWindow {
+  override func awakeFromNib() {
+    let flutterViewController = FlutterViewController()
+    let windowFrame = self.frame
+    self.contentViewController = flutterViewController
+    self.setFrame(windowFrame, display: true)
+
+    RegisterGeneratedPlugins(registry: flutterViewController)
+
+    super.awakeFromNib()
+  }
+}

backend/desktop-app/macos/Runner/Release.entitlements

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+</dict>
+</plist>

backend/desktop-app/macos/RunnerTests/RunnerTests.swift

@@ -0,0 +1,12 @@
+import Cocoa
+import FlutterMacOS
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}

backend/desktop-app/pubspec.lock

@@ -0,0 +1,810 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: a49d6cf99e8d8e7a8e93668d09ced0bbdb954d0b4fccc2f5f9241c6b87fad95c
+      url: "https://pub.dev"
+    source: hosted
+    version: "99.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "663efa951fb8a45e06f491223a604c93820598f20e6a99c25617a1576065e8b7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: e2eb0491ba5ddb6177742d2da23904574082139b07c1e33b8503b9f46f3e1a37
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  cli_config:
+    dependency: transitive
+    description:
+      name: cli_config
+      sha256: ac20a183a07002b700f0c25e61b7ee46b23c309d76ab7b7640a028f18e4d99ec
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.0"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  code_assets:
+    dependency: transitive
+    description:
+      name: code_assets
+      sha256: bf394f466ba9205f1812a0433b392d6af280f155f56651eda7c18cc32ed493b8
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: b30acd5944035672bc15c6b7a8b47d773e41e2f17de064350988c5d02adb1c68
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      sha256: "956a3de0725ca232ad353565a8290d3357592bf4250f6f298a185e2d949c5d3d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.15.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
+  dio:
+    dependency: "direct main"
+    description:
+      name: dio
+      sha256: "0df44ebba85e503958eb75d07eedd3c86275a58c1d3eda2f2ce8f0a2c3abbb3c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.11.0"
+  dio_web_adapter:
+    dependency: transitive
+    description:
+      name: dio_web_adapter
+      sha256: "0786d0b7295a373de356fc0af4f6f1d0ab2844ed31b19dfc5e7556b70e24212c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.1"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.3"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "6d7fd89431262d8f3125e81b50d3847a091d846eafcd4fdb88dd06f36d705a45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  ffi_leak_tracker:
+    dependency: transitive
+    description:
+      name: ffi_leak_tracker
+      sha256: "4093d4ef9ca06ffe2786e73bfb25e22aa92112b9bb4ec941f11e3e6b61489a97"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.2"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_lints:
+    dependency: "direct dev"
+    description:
+      name: flutter_lints
+      sha256: "3105dc8492f6183fb076ccf1f351ac3d60564bff92e20bfc4af9cc1651f4e7e1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.0"
+  flutter_riverpod:
+    dependency: "direct main"
+    description:
+      name: flutter_riverpod
+      sha256: "56e81e662e6e54e59b231da57e90ac0d06ac67d8e3f2273c129a37ae6282b40c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.2"
+  flutter_secure_storage:
+    dependency: "direct main"
+    description:
+      name: flutter_secure_storage
+      sha256: "7686b1d6a29985dcbb808c59518226e603e3bfa7c0ddfd1a0d00e4cda77c868e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.3.1"
+  flutter_secure_storage_darwin:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_darwin
+      sha256: "82329fa5cdf343773b1b6897dea959105a29f092454259edff92f9f6637e8149"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.2"
+  flutter_secure_storage_linux:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_linux
+      sha256: a5f35ddab43cf5c8215d2feb4ce1957851f28c5c37e6f04335066a0602087bf5
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.1"
+  flutter_secure_storage_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_platform_interface
+      sha256: "06686df417f34fe9f963ed217b7fdce250e2f637ddd6c374d7eb054549770633"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  flutter_secure_storage_web:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_web
+      sha256: "073a62b3aeb866ab4ce795f960413948e51e5a42a9b0c8333b6daf5bb3208a1c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  flutter_secure_storage_windows:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_windows
+      sha256: "471951813a97006d899db4948acc654a4f28c440083ea08178935ce20b173ec1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.2.2"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      sha256: f64a0333a82f30b0cca061bc3d143813a486dc086b574bfb233b7c1372427694
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  go_router:
+    dependency: "direct main"
+    description:
+      name: go_router
+      sha256: "5922b2861e2235a3504896f0d6fa07d84141b480cf52eecd2f42cd25585a9e8a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "17.3.0"
+  hooks:
+    dependency: transitive
+    description:
+      name: hooks
+      sha256: "9a62a50b50b769a737bc0a8ff381f333529df3ab746b2f6b02e83760231455ba"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: aa6199f908078bb1c5efb8d8638d4ae191aac11b311132c3ef48ce352fb52ef8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.2"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.5"
+  jni:
+    dependency: transitive
+    description:
+      name: jni
+      sha256: f038e58b4dc2c9037f50e233175086337e0b305e356d28211bf55f21c504cbd3
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.3"
+  jni_flutter:
+    dependency: transitive
+    description:
+      name: jni_flutter
+      sha256: "7b717011ea40d04fd47c2731d3d1d36eb99eba3435c2753d62489e8c3c9991d5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
+  jni_util:
+    dependency: transitive
+    description:
+      name: jni_util
+      sha256: "1ba86da04a5f2bf18fde2edb235587e70c5b0fc5bd4ba955f46b00942c3fc35f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: "33e2e26bdd85a0112ec15400c8cbffea70d0f9c3407491f672a2fad47915e2de"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.0.2"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: "1dbc140bb5a23c75ea9c4811222756104fbcd1a27173f0c34ca01e16bea473c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.10"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: "8d5a2d49f4a66b49744b23b018848400d23e54caf9463f4eb20df3eb8acb2eb1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  lints:
+    dependency: transitive
+    description:
+      name: lints
+      sha256: "12f842a479589fea194fe5c5a3095abc7be0c1f2ddfa9a0e76aed1dbd26a87df"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.0"
+  listen:
+    dependency: transitive
+    description:
+      name: listen
+      sha256: cb0ad74d7453d8f83a7c1fae401828681ef5df21d41a3a26a04af590c985d085
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0-beta.4"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: dc0b7dc7651697ea4ff3e69ef44b0407ea32c487a39fff6a4004fa585e901861
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.19"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "1741988757a65eb6b36abe716829688cf01910bbf91c34354ff7ec1c3de2b349"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      sha256: "6e7eac89047ab8a8d26cf16127b5ed26de65209847630400f9aefd7cd5c730db"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  objective_c:
+    dependency: transitive
+    description:
+      name: objective_c
+      sha256: b7fb95a6d9a4f009edd63dc5ac69f07420b23a16161c6dd8660290b59c602e8e
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.5.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: a7f4874f987173da295a61c181b8ee71dab59b332a486b391babf26a1b884825
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.6"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "69cbd515a62b94d32a7944f086b2f82b4ac40a1d45bebfc00813a430ab2dabcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.1"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "2a376b7d6392d80cd3705782d2caa734ca4727776db0b6ec36ef3f1855197699"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.0"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: "58c2005f147315b11e9b4a7bc889cd5203e250cba8e3f012dae259b4972b5c16"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: "484838772624c3a4b94f1e44a3e19897fee738f2d5c4ce448443b0417f7c9dda"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: bd6f00dbd873bfb70d0761682da2b3a2c2fccc2b9e84c495821639601d81afe7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "5d6b1b0036a5f331ebc77c850ebc8506cbc1e9416c27e59b439f917a902a4984"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "978783255c543aa3586a1b3c21f6e9d720eb315376a915872c61ef8b5c20177d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.2"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  record_use:
+    dependency: transitive
+    description:
+      name: record_use
+      sha256: "2551bd8eecfe95d14ae75f6021ad0248be5c27f138c2ec12fcb52b500b3ba1ed"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.0"
+  riverpod:
+    dependency: transitive
+    description:
+      name: riverpod
+      sha256: "84351b3472a447f7b89f961f95c73287009d58c59d8cc1267425d995f78e50f1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.2"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: c3025c5534b01739267eb7d76959bbc25a6d10f6988e1c2a3036940133dd10bf
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.5"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "0634e64bd719f89c012f392938e173521f535d3ecaf66558fa94a056d22b5cc7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.27"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: "4e7eaffc2b17ba398759f1151415869a34771ba11ebbccd1b0145472a619a64f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.6"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: "649dc798a33931919ea356c4305c2d1f81619ea6e92244070b520187b5140ef9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.2"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: c49bd060261c9a3f0ff445892695d6212ff603ef3115edbb448509d407600019
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.2"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      sha256: "89f967eca29607c933ba9571d838be31d67f53f6e4ee15147d5dc2934fee1b1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      sha256: c87c3875f91262785dade62d135760c2c69cb217ac759485334c5857ad89f6e3
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.3"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "3632775c8e90d6c9712f883e633716432a27758216dfb61bd86a8321c0580925"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      sha256: c0713a43e323c3302c2abe2a1cc89aa057a387101ebd280371d6a6c9fa68516b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      sha256: "190222579a448b03896e0ca6eca5998fa810fda630c1d65e2f78b3f638f54812"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.10.13"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "56a02f1f4cd1a2d96303c0144c93bd6d909eea6bee6bf5a0e0b685edbd4c47ab"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.2"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.12.1"
+  state_notifier:
+    dependency: transitive
+    description:
+      name: state_notifier
+      sha256: b8677376aa54f2d7c58280d5a007f9e8774f1968d1fb1c096adcb4792fba29bb
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  test:
+    dependency: transitive
+    description:
+      name: test
+      sha256: "8d9ceddbab833f180fbefed08afa76d7c03513dfdba87ffcec2718b02bbcbf20"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.31.0"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "949a932224383300f01be9221c39180316445ecb8e7547f70a41a35bf421fb9e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.11"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      sha256: "1991d4cfe85d5043241acac92962c3977c8d2f2add1ee73130c7b286417d1d34"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.17"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: "9b129329f58692f6e6578329498a8fe9fbe98f090beb764ffbb8ee2eadd01dcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.6.0"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      sha256: d530bd74fea330e6e364cda7a85019c434070188383e1cd8d9777ee586914c5b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: "0016aef94fc66495ac78af5859181e3f3bf2026bd8eecc72b9565601e19ab360"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.2.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "1398c9f081a753f9226febe8900fce8f7d0a67163334e1c94a2438339d79d635"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "34d64019aa8e36bf9842ac014bb5d2f5586ca73df5e4d9bf5c936975cae6982c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: d645757fb0f4773d602444000a8131ff5d48c9e47adfe9772652dd1a4f2d45c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      sha256: "87d3f2333bb240704cd3f1c6b5b7acd8a10e7f0bc28c28dcf14e782014f4a572"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: ba6f4bba816c8d7e3c1580e170f3786d216951cc6b94babc3b814c08d2cb2738
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.3.0"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: "7a3f37b05d989967cdddcbb571f1ea834867ae2faa29725fd085180e0883aa15"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.3"
+sdks:
+  dart: ">=3.12.2 <4.0.0"
+  flutter: ">=3.44.0"

backend/desktop-app/pubspec.yaml

@@ -0,0 +1,91 @@
+name: tt_desktop
+description: "Native Flutter desktop app for TT-Tagebuch."
+# The following line prevents the package from being accidentally published to
+# pub.dev using `flutter pub publish`. This is preferred for private packages.
+publish_to: 'none' # Remove this line if you wish to publish to pub.dev
+
+# The following defines the version and build number for your application.
+# A version number is three numbers separated by dots, like 1.2.43
+# followed by an optional build number separated by a +.
+# Both the version and the builder number may be overridden in flutter
+# build by specifying --build-name and --build-number, respectively.
+# In Android, build-name is used as versionName while build-number used as versionCode.
+# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
+# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
+# Read more about iOS versioning at
+# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
+# In Windows, build-name is used as the major, minor, and patch parts
+# of the product and file versions while build-number is used as the build suffix.
+version: 1.0.0+1
+
+environment:
+  sdk: ^3.12.2
+
+# Dependencies specify other packages that your package needs in order to work.
+# To automatically upgrade your package dependencies to the latest versions
+# consider running `flutter pub upgrade --major-versions`. Alternatively,
+# dependencies can be manually updated by changing the version numbers below to
+# the latest version available on pub.dev. To see which dependencies have newer
+# versions available, run `flutter pub outdated`.
+dependencies:
+  flutter:
+    sdk: flutter
+
+  flutter_riverpod: ^3.4.1
+  go_router: ^17.3.0
+  dio: ^5.11.0
+  flutter_secure_storage: ^10.3.1
+  shared_preferences: ^2.5.5
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  # The "flutter_lints" package below contains a set of recommended lints to
+  # encourage good coding practices. The lint set provided by the package is
+  # activated in the `analysis_options.yaml` file located at the root of your
+  # package. See that file for information about deactivating specific lint
+  # rules and activating additional ones.
+  flutter_lints: ^6.0.0
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter packages.
+flutter:
+
+  # The following line ensures that the Material Icons font is
+  # included with your application, so that you can use the icons in
+  # the material Icons class.
+  uses-material-design: true
+
+  # To add assets to your application, add an assets section, like this:
+  # assets:
+  #   - images/a_dot_burr.jpeg
+  #   - images/a_dot_ham.jpeg
+
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.dev/to/resolution-aware-images
+
+  # For details regarding adding assets from package dependencies, see
+  # https://flutter.dev/to/asset-from-package
+
+  # To add custom fonts to your application, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts from package dependencies,
+  # see https://flutter.dev/to/font-from-package

backend/desktop-app/test/widget_test.dart

@@ -0,0 +1,40 @@
+// This is a basic Flutter widget test.
+//
+// To perform an interaction with a widget in your test, use the WidgetTester
+// utility in the flutter_test package. For example, you can send tap and scroll
+// gestures. You can also use WidgetTester to find child widgets in the widget
+// tree, read text, and verify that the values of widget properties are correct.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:tt_desktop/features/auth/presentation/login_page.dart';
+import 'package:tt_desktop/features/shell/presentation/app_shell.dart';
+
+void main() {
+  testWidgets('login presents its native sign-in form', (
+    WidgetTester tester,
+  ) async {
+    await tester.pumpWidget(const MaterialApp(home: LoginPage()));
+
+    expect(find.text('Willkommen zurück'), findsOneWidget);
+    expect(find.text('Anmelden'), findsOneWidget);
+  });
+
+  testWidgets('workspace switches to the club product', (
+    WidgetTester tester,
+  ) async {
+    await tester.binding.setSurfaceSize(const Size(1280, 900));
+    addTearDown(() => tester.binding.setSurfaceSize(null));
+    await tester.pumpWidget(const MaterialApp(home: AppShell()));
+
+    await tester.tap(find.byTooltip('Produkt wechseln'));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('TT Verein').last);
+    await tester.pumpAndSettle();
+
+    expect(find.text('TT Verein'), findsWidgets);
+    expect(find.text('Kommunikation'), findsWidgets);
+    expect(find.text('Alles Wichtige aus deinem Verein.'), findsOneWidget);
+  });
+}

backend/desktop-app/windows/.gitignore

@@ -0,0 +1,17 @@
+flutter/ephemeral/
+
+# Visual Studio user-specific files.
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# Visual Studio build-related files.
+x64/
+x86/
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/

backend/desktop-app/windows/CMakeLists.txt

@@ -0,0 +1,108 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.14)
+project(tt_desktop LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "tt_desktop")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(VERSION 3.14...3.25)
+
+# Define build configuration option.
+get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+if(IS_MULTICONFIG)
+  set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release"
+    CACHE STRING "" FORCE)
+else()
+  if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    set(CMAKE_BUILD_TYPE "Debug" CACHE
+      STRING "Flutter build mode" FORCE)
+    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+      "Debug" "Profile" "Release")
+  endif()
+endif()
+# Define settings for the Profile build mode.
+set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}")
+set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
+
+# Use Unicode for all projects.
+add_definitions(-DUNICODE -D_UNICODE)
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_17)
+  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
+  target_compile_options(${TARGET} PRIVATE /EHsc)
+  target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# Support files are copied into place next to the executable, so that it can
+# run in place. This is done instead of making a separate bundle (as on Linux)
+# so that building and running from within Visual Studio will work.
+set(BUILD_BUNDLE_DIR "$<TARGET_FILE_DIR:${BINARY_NAME}>")
+# Make the "install" step default, as it's required to run.
+set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1)
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+if(PLUGIN_BUNDLED_LIBRARIES)
+  install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/windows/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  CONFIGURATIONS Profile;Release
+  COMPONENT Runtime)

backend/desktop-app/windows/flutter/CMakeLists.txt

@@ -0,0 +1,109 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.14)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
+
+# Set fallback configurations for older versions of the flutter tool.
+if (NOT DEFINED FLUTTER_TARGET_PLATFORM)
+  set(FLUTTER_TARGET_PLATFORM "windows-x64")
+endif()
+
+# === Flutter Library ===
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "flutter_export.h"
+  "flutter_windows.h"
+  "flutter_messenger.h"
+  "flutter_plugin_registrar.h"
+  "flutter_texture_registrar.h"
+)
+list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib")
+add_dependencies(flutter flutter_assemble)
+
+# === Wrapper ===
+list(APPEND CPP_WRAPPER_SOURCES_CORE
+  "core_implementations.cc"
+  "standard_codec.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/")
+list(APPEND CPP_WRAPPER_SOURCES_PLUGIN
+  "plugin_registrar.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/")
+list(APPEND CPP_WRAPPER_SOURCES_APP
+  "flutter_engine.cc"
+  "flutter_view_controller.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/")
+
+# Wrapper sources needed for a plugin.
+add_library(flutter_wrapper_plugin STATIC
+  ${CPP_WRAPPER_SOURCES_CORE}
+  ${CPP_WRAPPER_SOURCES_PLUGIN}
+)
+apply_standard_settings(flutter_wrapper_plugin)
+set_target_properties(flutter_wrapper_plugin PROPERTIES
+  POSITION_INDEPENDENT_CODE ON)
+set_target_properties(flutter_wrapper_plugin PROPERTIES
+  CXX_VISIBILITY_PRESET hidden)
+target_link_libraries(flutter_wrapper_plugin PUBLIC flutter)
+target_include_directories(flutter_wrapper_plugin PUBLIC
+  "${WRAPPER_ROOT}/include"
+)
+add_dependencies(flutter_wrapper_plugin flutter_assemble)
+
+# Wrapper sources needed for the runner.
+add_library(flutter_wrapper_app STATIC
+  ${CPP_WRAPPER_SOURCES_CORE}
+  ${CPP_WRAPPER_SOURCES_APP}
+)
+apply_standard_settings(flutter_wrapper_app)
+target_link_libraries(flutter_wrapper_app PUBLIC flutter)
+target_include_directories(flutter_wrapper_app PUBLIC
+  "${WRAPPER_ROOT}/include"
+)
+add_dependencies(flutter_wrapper_app flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_")
+set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE)
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN}
+    ${CPP_WRAPPER_SOURCES_APP}
+    ${PHONY_OUTPUT}
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
+      ${FLUTTER_TARGET_PLATFORM} $<CONFIG>
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+  ${CPP_WRAPPER_SOURCES_CORE}
+  ${CPP_WRAPPER_SOURCES_PLUGIN}
+  ${CPP_WRAPPER_SOURCES_APP}
+)

backend/desktop-app/windows/flutter/generated_plugin_registrant.cc

@@ -0,0 +1,14 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+#include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
+
+void RegisterPlugins(flutter::PluginRegistry* registry) {
+  FlutterSecureStorageWindowsPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
+}

backend/desktop-app/windows/flutter/generated_plugin_registrant.h

@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter/plugin_registry.h>
+
+// Registers Flutter plugins.
+void RegisterPlugins(flutter::PluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_

backend/desktop-app/windows/flutter/generated_plugins.cmake

@@ -0,0 +1,25 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+  flutter_secure_storage_windows
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+  jni
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)

backend/desktop-app/windows/runner/CMakeLists.txt

@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.14)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME} WIN32
+  "flutter_window.cpp"
+  "main.cpp"
+  "utils.cpp"
+  "win32_window.cpp"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+  "Runner.rc"
+  "runner.exe.manifest"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the build version.
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION=\"${FLUTTER_VERSION}\"")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_MAJOR=${FLUTTER_VERSION_MAJOR}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_MINOR=${FLUTTER_VERSION_MINOR}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_PATCH=${FLUTTER_VERSION_PATCH}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_BUILD=${FLUTTER_VERSION_BUILD}")
+
+# Disable Windows macros that collide with C++ standard library functions.
+target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
+
+# Add dependency libraries and include directories. Add any application-specific
+# dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
+target_link_libraries(${BINARY_NAME} PRIVATE "dwmapi.lib")
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)

backend/desktop-app/windows/runner/Runner.rc

@@ -0,0 +1,121 @@
+// Microsoft Visual C++ generated resource script.
+//
+#pragma code_page(65001)
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "winres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// English (United States) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE
+BEGIN
+    "resource.h\0"
+END
+
+2 TEXTINCLUDE
+BEGIN
+    "#include ""winres.h""\r\n"
+    "\0"
+END
+
+3 TEXTINCLUDE
+BEGIN
+    "\r\n"
+    "\0"
+END
+
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+IDI_APP_ICON            ICON                    "resources\\app_icon.ico"
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+#if defined(FLUTTER_VERSION_MAJOR) && defined(FLUTTER_VERSION_MINOR) && defined(FLUTTER_VERSION_PATCH) && defined(FLUTTER_VERSION_BUILD)
+#define VERSION_AS_NUMBER FLUTTER_VERSION_MAJOR,FLUTTER_VERSION_MINOR,FLUTTER_VERSION_PATCH,FLUTTER_VERSION_BUILD
+#else
+#define VERSION_AS_NUMBER 1,0,0,0
+#endif
+
+#if defined(FLUTTER_VERSION)
+#define VERSION_AS_STRING FLUTTER_VERSION
+#else
+#define VERSION_AS_STRING "1.0.0"
+#endif
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION VERSION_AS_NUMBER
+ PRODUCTVERSION VERSION_AS_NUMBER
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS__WINDOWS32
+ FILETYPE VFT_APP
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904e4"
+        BEGIN
+            VALUE "CompanyName", "de.tttagebuch" "\0"
+            VALUE "FileDescription", "tt_desktop" "\0"
+            VALUE "FileVersion", VERSION_AS_STRING "\0"
+            VALUE "InternalName", "tt_desktop" "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2026 de.tttagebuch. All rights reserved." "\0"
+            VALUE "OriginalFilename", "tt_desktop.exe" "\0"
+            VALUE "ProductName", "tt_desktop" "\0"
+            VALUE "ProductVersion", VERSION_AS_STRING "\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1252
+    END
+END
+
+#endif    // English (United States) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+
+
+/////////////////////////////////////////////////////////////////////////////
+#endif    // not APSTUDIO_INVOKED

backend/desktop-app/windows/runner/flutter_window.cpp

@@ -0,0 +1,71 @@
+#include "flutter_window.h"
+
+#include <optional>
+
+#include "flutter/generated_plugin_registrant.h"
+
+FlutterWindow::FlutterWindow(const flutter::DartProject& project)
+    : project_(project) {}
+
+FlutterWindow::~FlutterWindow() {}
+
+bool FlutterWindow::OnCreate() {
+  if (!Win32Window::OnCreate()) {
+    return false;
+  }
+
+  RECT frame = GetClientArea();
+
+  // The size here must match the window dimensions to avoid unnecessary surface
+  // creation / destruction in the startup path.
+  flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
+      frame.right - frame.left, frame.bottom - frame.top, project_);
+  // Ensure that basic setup of the controller was successful.
+  if (!flutter_controller_->engine() || !flutter_controller_->view()) {
+    return false;
+  }
+  RegisterPlugins(flutter_controller_->engine());
+  SetChildContent(flutter_controller_->view()->GetNativeWindow());
+
+  flutter_controller_->engine()->SetNextFrameCallback([&]() {
+    this->Show();
+  });
+
+  // Flutter can complete the first frame before the "show window" callback is
+  // registered. The following call ensures a frame is pending to ensure the
+  // window is shown. It is a no-op if the first frame hasn't completed yet.
+  flutter_controller_->ForceRedraw();
+
+  return true;
+}
+
+void FlutterWindow::OnDestroy() {
+  if (flutter_controller_) {
+    flutter_controller_ = nullptr;
+  }
+
+  Win32Window::OnDestroy();
+}
+
+LRESULT
+FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
+                              WPARAM const wparam,
+                              LPARAM const lparam) noexcept {
+  // Give Flutter, including plugins, an opportunity to handle window messages.
+  if (flutter_controller_) {
+    std::optional<LRESULT> result =
+        flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
+                                                      lparam);
+    if (result) {
+      return *result;
+    }
+  }
+
+  switch (message) {
+    case WM_FONTCHANGE:
+      flutter_controller_->engine()->ReloadSystemFonts();
+      break;
+  }
+
+  return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
+}

backend/desktop-app/windows/runner/flutter_window.h

@@ -0,0 +1,33 @@
+#ifndef RUNNER_FLUTTER_WINDOW_H_
+#define RUNNER_FLUTTER_WINDOW_H_
+
+#include <flutter/dart_project.h>
+#include <flutter/flutter_view_controller.h>
+
+#include <memory>
+
+#include "win32_window.h"
+
+// A window that does nothing but host a Flutter view.
+class FlutterWindow : public Win32Window {
+ public:
+  // Creates a new FlutterWindow hosting a Flutter view running |project|.
+  explicit FlutterWindow(const flutter::DartProject& project);
+  virtual ~FlutterWindow();
+
+ protected:
+  // Win32Window:
+  bool OnCreate() override;
+  void OnDestroy() override;
+  LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
+                         LPARAM const lparam) noexcept override;
+
+ private:
+  // The project to run.
+  flutter::DartProject project_;
+
+  // The Flutter instance hosted by this window.
+  std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
+};
+
+#endif  // RUNNER_FLUTTER_WINDOW_H_

backend/desktop-app/windows/runner/main.cpp

@@ -0,0 +1,43 @@
+#include <flutter/dart_project.h>
+#include <flutter/flutter_view_controller.h>
+#include <windows.h>
+
+#include "flutter_window.h"
+#include "utils.h"
+
+int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
+                      _In_ wchar_t *command_line, _In_ int show_command) {
+  // Attach to console when present (e.g., 'flutter run') or create a
+  // new console when running with a debugger.
+  if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
+    CreateAndAttachConsole();
+  }
+
+  // Initialize COM, so that it is available for use in the library and/or
+  // plugins.
+  ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+
+  flutter::DartProject project(L"data");
+
+  std::vector<std::string> command_line_arguments =
+      GetCommandLineArguments();
+
+  project.set_dart_entrypoint_arguments(std::move(command_line_arguments));
+
+  FlutterWindow window(project);
+  Win32Window::Point origin(10, 10);
+  Win32Window::Size size(1280, 720);
+  if (!window.Create(L"tt_desktop", origin, size)) {
+    return EXIT_FAILURE;
+  }
+  window.SetQuitOnClose(true);
+
+  ::MSG msg;
+  while (::GetMessage(&msg, nullptr, 0, 0)) {
+    ::TranslateMessage(&msg);
+    ::DispatchMessage(&msg);
+  }
+
+  ::CoUninitialize();
+  return EXIT_SUCCESS;
+}

backend/desktop-app/windows/runner/resource.h

@@ -0,0 +1,16 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by Runner.rc
+//
+#define IDI_APP_ICON                    101
+
+// Next default values for new objects
+//
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        102
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif

backend/desktop-app/windows/runner/runner.exe.manifest

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
+    </windowsSettings>
+  </application>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows 10 and Windows 11 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
+    </application>
+  </compatibility>
+</assembly>

backend/desktop-app/windows/runner/utils.cpp

@@ -0,0 +1,69 @@
+#include "utils.h"
+
+#include <flutter_windows.h>
+#include <io.h>
+#include <stdio.h>
+#include <windows.h>
+
+#include <iostream>
+
+void CreateAndAttachConsole() {
+  if (::AllocConsole()) {
+    FILE *unused;
+    if (freopen_s(&unused, "CONOUT$", "w", stdout)) {
+      _dup2(_fileno(stdout), 1);
+    }
+    if (freopen_s(&unused, "CONOUT$", "w", stderr)) {
+      _dup2(_fileno(stdout), 2);
+    }
+    std::ios::sync_with_stdio();
+    FlutterDesktopResyncOutputStreams();
+  }
+}
+
+std::vector<std::string> GetCommandLineArguments() {
+  // Convert the UTF-16 command line arguments to UTF-8 for the Engine to use.
+  int argc;
+  wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc);
+  if (argv == nullptr) {
+    return std::vector<std::string>();
+  }
+
+  std::vector<std::string> command_line_arguments;
+
+  // Skip the first argument as it's the binary name.
+  for (int i = 1; i < argc; i++) {
+    command_line_arguments.push_back(Utf8FromUtf16(argv[i]));
+  }
+
+  ::LocalFree(argv);
+
+  return command_line_arguments;
+}
+
+std::string Utf8FromUtf16(const wchar_t* utf16_string) {
+  if (utf16_string == nullptr) {
+    return std::string();
+  }
+  // First, find the length of the string with a safe upper bound (CWE-126).
+  // UNICODE_STRING_MAX_CHARS (32767) is the maximum length of a UNICODE_STRING.
+  int input_length = static_cast<int>(wcsnlen(utf16_string, UNICODE_STRING_MAX_CHARS));
+  // Now use that bounded length to determine the required buffer size.
+  // When an explicit length is passed, WideCharToMultiByte does not include
+  // the null terminator in its returned size.
+  int target_length = ::WideCharToMultiByte(
+      CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
+      input_length, nullptr, 0, nullptr, nullptr);
+  std::string utf8_string;
+  if (target_length == 0 || static_cast<size_t>(target_length) > utf8_string.max_size()) {
+    return utf8_string;
+  }
+  utf8_string.resize(target_length);
+  int converted_length = ::WideCharToMultiByte(
+      CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
+      input_length, utf8_string.data(), target_length, nullptr, nullptr);
+  if (converted_length == 0) {
+    return std::string();
+  }
+  return utf8_string;
+}

backend/desktop-app/windows/runner/utils.h

@@ -0,0 +1,19 @@
+#ifndef RUNNER_UTILS_H_
+#define RUNNER_UTILS_H_
+
+#include <string>
+#include <vector>
+
+// Creates a console for the process, and redirects stdout and stderr to
+// it for both the runner and the Flutter library.
+void CreateAndAttachConsole();
+
+// Takes a null-terminated wchar_t* encoded in UTF-16 and returns a std::string
+// encoded in UTF-8. Returns an empty std::string on failure.
+std::string Utf8FromUtf16(const wchar_t* utf16_string);
+
+// Gets the command line arguments passed in as a std::vector<std::string>,
+// encoded in UTF-8. Returns an empty std::vector<std::string> on failure.
+std::vector<std::string> GetCommandLineArguments();
+
+#endif  // RUNNER_UTILS_H_

backend/desktop-app/windows/runner/win32_window.cpp

@@ -0,0 +1,288 @@
+#include "win32_window.h"
+
+#include <dwmapi.h>
+#include <flutter_windows.h>
+
+#include "resource.h"
+
+namespace {
+
+/// Window attribute that enables dark mode window decorations.
+///
+/// Redefined in case the developer's machine has a Windows SDK older than
+/// version 10.0.22000.0.
+/// See: https://docs.microsoft.com/windows/win32/api/dwmapi/ne-dwmapi-dwmwindowattribute
+#ifndef DWMWA_USE_IMMERSIVE_DARK_MODE
+#define DWMWA_USE_IMMERSIVE_DARK_MODE 20
+#endif
+
+constexpr const wchar_t kWindowClassName[] = L"FLUTTER_RUNNER_WIN32_WINDOW";
+
+/// Registry key for app theme preference.
+///
+/// A value of 0 indicates apps should use dark mode. A non-zero or missing
+/// value indicates apps should use light mode.
+constexpr const wchar_t kGetPreferredBrightnessRegKey[] =
+  L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize";
+constexpr const wchar_t kGetPreferredBrightnessRegValue[] = L"AppsUseLightTheme";
+
+// The number of Win32Window objects that currently exist.
+static int g_active_window_count = 0;
+
+using EnableNonClientDpiScaling = BOOL __stdcall(HWND hwnd);
+
+// Scale helper to convert logical scaler values to physical using passed in
+// scale factor
+int Scale(int source, double scale_factor) {
+  return static_cast<int>(source * scale_factor);
+}
+
+// Dynamically loads the |EnableNonClientDpiScaling| from the User32 module.
+// This API is only needed for PerMonitor V1 awareness mode.
+void EnableFullDpiSupportIfAvailable(HWND hwnd) {
+  HMODULE user32_module = LoadLibraryA("User32.dll");
+  if (!user32_module) {
+    return;
+  }
+  auto enable_non_client_dpi_scaling =
+      reinterpret_cast<EnableNonClientDpiScaling*>(
+          GetProcAddress(user32_module, "EnableNonClientDpiScaling"));
+  if (enable_non_client_dpi_scaling != nullptr) {
+    enable_non_client_dpi_scaling(hwnd);
+  }
+  FreeLibrary(user32_module);
+}
+
+}  // namespace
+
+// Manages the Win32Window's window class registration.
+class WindowClassRegistrar {
+ public:
+  ~WindowClassRegistrar() = default;
+
+  // Returns the singleton registrar instance.
+  static WindowClassRegistrar* GetInstance() {
+    if (!instance_) {
+      instance_ = new WindowClassRegistrar();
+    }
+    return instance_;
+  }
+
+  // Returns the name of the window class, registering the class if it hasn't
+  // previously been registered.
+  const wchar_t* GetWindowClass();
+
+  // Unregisters the window class. Should only be called if there are no
+  // instances of the window.
+  void UnregisterWindowClass();
+
+ private:
+  WindowClassRegistrar() = default;
+
+  static WindowClassRegistrar* instance_;
+
+  bool class_registered_ = false;
+};
+
+WindowClassRegistrar* WindowClassRegistrar::instance_ = nullptr;
+
+const wchar_t* WindowClassRegistrar::GetWindowClass() {
+  if (!class_registered_) {
+    WNDCLASS window_class{};
+    window_class.hCursor = LoadCursor(nullptr, IDC_ARROW);
+    window_class.lpszClassName = kWindowClassName;
+    window_class.style = CS_HREDRAW | CS_VREDRAW;
+    window_class.cbClsExtra = 0;
+    window_class.cbWndExtra = 0;
+    window_class.hInstance = GetModuleHandle(nullptr);
+    window_class.hIcon =
+        LoadIcon(window_class.hInstance, MAKEINTRESOURCE(IDI_APP_ICON));
+    window_class.hbrBackground = 0;
+    window_class.lpszMenuName = nullptr;
+    window_class.lpfnWndProc = Win32Window::WndProc;
+    RegisterClass(&window_class);
+    class_registered_ = true;
+  }
+  return kWindowClassName;
+}
+
+void WindowClassRegistrar::UnregisterWindowClass() {
+  UnregisterClass(kWindowClassName, nullptr);
+  class_registered_ = false;
+}
+
+Win32Window::Win32Window() {
+  ++g_active_window_count;
+}
+
+Win32Window::~Win32Window() {
+  --g_active_window_count;
+  Destroy();
+}
+
+bool Win32Window::Create(const std::wstring& title,
+                         const Point& origin,
+                         const Size& size) {
+  Destroy();
+
+  const wchar_t* window_class =
+      WindowClassRegistrar::GetInstance()->GetWindowClass();
+
+  const POINT target_point = {static_cast<LONG>(origin.x),
+                              static_cast<LONG>(origin.y)};
+  HMONITOR monitor = MonitorFromPoint(target_point, MONITOR_DEFAULTTONEAREST);
+  UINT dpi = FlutterDesktopGetDpiForMonitor(monitor);
+  double scale_factor = dpi / 96.0;
+
+  HWND window = CreateWindow(
+      window_class, title.c_str(), WS_OVERLAPPEDWINDOW,
+      Scale(origin.x, scale_factor), Scale(origin.y, scale_factor),
+      Scale(size.width, scale_factor), Scale(size.height, scale_factor),
+      nullptr, nullptr, GetModuleHandle(nullptr), this);
+
+  if (!window) {
+    return false;
+  }
+
+  UpdateTheme(window);
+
+  return OnCreate();
+}
+
+bool Win32Window::Show() {
+  return ShowWindow(window_handle_, SW_SHOWNORMAL);
+}
+
+// static
+LRESULT CALLBACK Win32Window::WndProc(HWND const window,
+                                      UINT const message,
+                                      WPARAM const wparam,
+                                      LPARAM const lparam) noexcept {
+  if (message == WM_NCCREATE) {
+    auto window_struct = reinterpret_cast<CREATESTRUCT*>(lparam);
+    SetWindowLongPtr(window, GWLP_USERDATA,
+                     reinterpret_cast<LONG_PTR>(window_struct->lpCreateParams));
+
+    auto that = static_cast<Win32Window*>(window_struct->lpCreateParams);
+    EnableFullDpiSupportIfAvailable(window);
+    that->window_handle_ = window;
+  } else if (Win32Window* that = GetThisFromHandle(window)) {
+    return that->MessageHandler(window, message, wparam, lparam);
+  }
+
+  return DefWindowProc(window, message, wparam, lparam);
+}
+
+LRESULT
+Win32Window::MessageHandler(HWND hwnd,
+                            UINT const message,
+                            WPARAM const wparam,
+                            LPARAM const lparam) noexcept {
+  switch (message) {
+    case WM_DESTROY:
+      window_handle_ = nullptr;
+      Destroy();
+      if (quit_on_close_) {
+        PostQuitMessage(0);
+      }
+      return 0;
+
+    case WM_DPICHANGED: {
+      auto newRectSize = reinterpret_cast<RECT*>(lparam);
+      LONG newWidth = newRectSize->right - newRectSize->left;
+      LONG newHeight = newRectSize->bottom - newRectSize->top;
+
+      SetWindowPos(hwnd, nullptr, newRectSize->left, newRectSize->top, newWidth,
+                   newHeight, SWP_NOZORDER | SWP_NOACTIVATE);
+
+      return 0;
+    }
+    case WM_SIZE: {
+      RECT rect = GetClientArea();
+      if (child_content_ != nullptr) {
+        // Size and position the child window.
+        MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left,
+                   rect.bottom - rect.top, TRUE);
+      }
+      return 0;
+    }
+
+    case WM_ACTIVATE:
+      if (child_content_ != nullptr) {
+        SetFocus(child_content_);
+      }
+      return 0;
+
+    case WM_DWMCOLORIZATIONCOLORCHANGED:
+      UpdateTheme(hwnd);
+      return 0;
+  }
+
+  return DefWindowProc(window_handle_, message, wparam, lparam);
+}
+
+void Win32Window::Destroy() {
+  OnDestroy();
+
+  if (window_handle_) {
+    DestroyWindow(window_handle_);
+    window_handle_ = nullptr;
+  }
+  if (g_active_window_count == 0) {
+    WindowClassRegistrar::GetInstance()->UnregisterWindowClass();
+  }
+}
+
+Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept {
+  return reinterpret_cast<Win32Window*>(
+      GetWindowLongPtr(window, GWLP_USERDATA));
+}
+
+void Win32Window::SetChildContent(HWND content) {
+  child_content_ = content;
+  SetParent(content, window_handle_);
+  RECT frame = GetClientArea();
+
+  MoveWindow(content, frame.left, frame.top, frame.right - frame.left,
+             frame.bottom - frame.top, true);
+
+  SetFocus(child_content_);
+}
+
+RECT Win32Window::GetClientArea() {
+  RECT frame;
+  GetClientRect(window_handle_, &frame);
+  return frame;
+}
+
+HWND Win32Window::GetHandle() {
+  return window_handle_;
+}
+
+void Win32Window::SetQuitOnClose(bool quit_on_close) {
+  quit_on_close_ = quit_on_close;
+}
+
+bool Win32Window::OnCreate() {
+  // No-op; provided for subclasses.
+  return true;
+}
+
+void Win32Window::OnDestroy() {
+  // No-op; provided for subclasses.
+}
+
+void Win32Window::UpdateTheme(HWND const window) {
+  DWORD light_mode;
+  DWORD light_mode_size = sizeof(light_mode);
+  LSTATUS result = RegGetValue(HKEY_CURRENT_USER, kGetPreferredBrightnessRegKey,
+                               kGetPreferredBrightnessRegValue,
+                               RRF_RT_REG_DWORD, nullptr, &light_mode,
+                               &light_mode_size);
+
+  if (result == ERROR_SUCCESS) {
+    BOOL enable_dark_mode = light_mode == 0;
+    DwmSetWindowAttribute(window, DWMWA_USE_IMMERSIVE_DARK_MODE,
+                          &enable_dark_mode, sizeof(enable_dark_mode));
+  }
+}

backend/desktop-app/windows/runner/win32_window.h

@@ -0,0 +1,102 @@
+#ifndef RUNNER_WIN32_WINDOW_H_
+#define RUNNER_WIN32_WINDOW_H_
+
+#include <windows.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+
+// A class abstraction for a high DPI-aware Win32 Window. Intended to be
+// inherited from by classes that wish to specialize with custom
+// rendering and input handling
+class Win32Window {
+ public:
+  struct Point {
+    unsigned int x;
+    unsigned int y;
+    Point(unsigned int x, unsigned int y) : x(x), y(y) {}
+  };
+
+  struct Size {
+    unsigned int width;
+    unsigned int height;
+    Size(unsigned int width, unsigned int height)
+        : width(width), height(height) {}
+  };
+
+  Win32Window();
+  virtual ~Win32Window();
+
+  // Creates a win32 window with |title| that is positioned and sized using
+  // |origin| and |size|. New windows are created on the default monitor. Window
+  // sizes are specified to the OS in physical pixels, hence to ensure a
+  // consistent size this function will scale the inputted width and height as
+  // as appropriate for the default monitor. The window is invisible until
+  // |Show| is called. Returns true if the window was created successfully.
+  bool Create(const std::wstring& title, const Point& origin, const Size& size);
+
+  // Show the current window. Returns true if the window was successfully shown.
+  bool Show();
+
+  // Release OS resources associated with window.
+  void Destroy();
+
+  // Inserts |content| into the window tree.
+  void SetChildContent(HWND content);
+
+  // Returns the backing Window handle to enable clients to set icon and other
+  // window properties. Returns nullptr if the window has been destroyed.
+  HWND GetHandle();
+
+  // If true, closing this window will quit the application.
+  void SetQuitOnClose(bool quit_on_close);
+
+  // Return a RECT representing the bounds of the current client area.
+  RECT GetClientArea();
+
+ protected:
+  // Processes and route salient window messages for mouse handling,
+  // size change and DPI. Delegates handling of these to member overloads that
+  // inheriting classes can handle.
+  virtual LRESULT MessageHandler(HWND window,
+                                 UINT const message,
+                                 WPARAM const wparam,
+                                 LPARAM const lparam) noexcept;
+
+  // Called when CreateAndShow is called, allowing subclass window-related
+  // setup. Subclasses should return false if setup fails.
+  virtual bool OnCreate();
+
+  // Called when Destroy is called.
+  virtual void OnDestroy();
+
+ private:
+  friend class WindowClassRegistrar;
+
+  // OS callback called by message pump. Handles the WM_NCCREATE message which
+  // is passed when the non-client area is being created and enables automatic
+  // non-client DPI scaling so that the non-client area automatically
+  // responds to changes in DPI. All other messages are handled by
+  // MessageHandler.
+  static LRESULT CALLBACK WndProc(HWND const window,
+                                  UINT const message,
+                                  WPARAM const wparam,
+                                  LPARAM const lparam) noexcept;
+
+  // Retrieves a class instance pointer for |window|
+  static Win32Window* GetThisFromHandle(HWND const window) noexcept;
+
+  // Update the window frame's theme to match the system theme.
+  static void UpdateTheme(HWND const window);
+
+  bool quit_on_close_ = false;
+
+  // window handle for top level window.
+  HWND window_handle_ = nullptr;
+
+  // window handle for hosted content.
+  HWND child_content_ = nullptr;
+};
+
+#endif  // RUNNER_WIN32_WINDOW_H_

backend/migrations/20260722_add_member_user_link.sql

@@ -1,4 +1,4 @@
-ALTER TABLE member
-  ADD COLUMN user_id INT NULL,
-  ADD UNIQUE KEY member_user_id_unique (user_id),
-  ADD CONSTRAINT member_user_id_fk FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE SET NULL;
+ALTER TABLE `member`
+  ADD COLUMN `user_id` INT NULL,
+  ADD UNIQUE KEY `member_user_id_unique` (`user_id`),
+  ADD CONSTRAINT `member_user_id_fk` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`) ON DELETE SET NULL;

backend/migrations/20260724_align_calendar_events_schema.sql

@@ -0,0 +1,11 @@
+-- Ergänzt eine bereits vorhandene ältere calendar_events-Tabelle um die
+-- Felder des aktuellen Kalender-Modells. Bestehende Termine bleiben erhalten.
+ALTER TABLE `calendar_events`
+  ADD COLUMN IF NOT EXISTS `event_type` VARCHAR(32) NOT NULL DEFAULT 'club_event' AFTER `club_id`,
+  ADD COLUMN IF NOT EXISTS `status` VARCHAR(32) NOT NULL DEFAULT 'planning' AFTER `event_type`,
+  ADD COLUMN IF NOT EXISTS `description` TEXT NULL AFTER `title`,
+  ADD COLUMN IF NOT EXISTS `location` VARCHAR(255) NULL AFTER `description`,
+  ADD COLUMN IF NOT EXISTS `registration_deadline` DATE NULL AFTER `end_date`,
+  ADD COLUMN IF NOT EXISTS `organizer_user_id` INT NULL AFTER `registration_deadline`,
+  ADD COLUMN IF NOT EXISTS `category` VARCHAR(64) NULL AFTER `organizer_user_id`,
+  ADD COLUMN IF NOT EXISTS `notes` TEXT NULL AFTER `category`;

backend/services/autoFetchMatchResultsService.js

@@ -14,6 +14,32 @@ import { devLog } from '../utils/logger.js';
 import SeasonService from './seasonService.js';
 
 class AutoFetchMatchResultsService {
+  getBerlinDateTimeParts(value) {
+    const formatter = new Intl.DateTimeFormat('en-CA', {
+      timeZone: 'Europe/Berlin',
+      year: 'numeric',
+      month: '2-digit',
+      day: '2-digit',
+      hour: '2-digit',
+      minute: '2-digit',
+      second: '2-digit',
+      hourCycle: 'h23',
+    });
+    const parts = Object.fromEntries(
+      formatter.formatToParts(value)
+        .filter((part) => part.type !== 'literal')
+        .map((part) => [part.type, part.value])
+    );
+    return {
+      year: Number(parts.year),
+      month: Number(parts.month),
+      day: Number(parts.day),
+      hour: parts.hour,
+      minute: parts.minute,
+      second: parts.second,
+    };
+  }
+
   parseMatchDateTime(rawValue) {
     if (!rawValue) {
       return { date: null, time: null };
@@ -23,14 +49,16 @@ class AutoFetchMatchResultsService {
       const normalized = rawValue.trim();
       const hasExplicitTimezone = /(?:Z|[+-]\d{2}:?\d{2})$/i.test(normalized);
 
-      // ISO values with explicit timezone are often UTC timestamps.
-      // Convert them to local clock time before persisting date/time parts.
+      // myTischtennis supplies ISO values with an explicit timezone in UTC.
+      // Match start times are local civil times, therefore never depend on the
+      // server process timezone (production commonly runs in UTC).
       if (hasExplicitTimezone) {
         const zoned = new Date(normalized);
         if (!Number.isNaN(zoned.getTime())) {
+          const berlin = this.getBerlinDateTimeParts(zoned);
           return {
-            date: new Date(zoned.getFullYear(), zoned.getMonth(), zoned.getDate(), 0, 0, 0, 0),
-            time: `${String(zoned.getHours()).padStart(2, '0')}:${String(zoned.getMinutes()).padStart(2, '0')}:${String(zoned.getSeconds()).padStart(2, '0')}`
+            date: new Date(berlin.year, berlin.month - 1, berlin.day, 0, 0, 0, 0),
+            time: `${berlin.hour}:${berlin.minute}:${berlin.second}`
           };
         }
       }

docs/FLUTTER_DESKTOP_APP_PLAN.md

@@ -0,0 +1,129 @@
+# Flutter Desktop-App – Umsetzungsplan
+
+## Ziel und Leitentscheidung
+
+Eine eigenständige, plattformübergreifende **Flutter-/Dart-Desktop-App** für Windows, macOS und Linux. Sie rendert ihre Oberflächen selbst mit Flutter – **keine WebView und keine eingebettete Vue-Webseite**.
+
+Die bestehende Express-/MySQL-Anwendung bleibt die gemeinsame Server- und API-Plattform. Web- und Desktop-App arbeiten deshalb mit denselben Vereinsdaten, Benutzern und Berechtigungen.
+
+**Abgrenzung:** Das Vue-Frontend wird nicht portiert oder eingebettet. Es dient nur als fachliche Referenz für Abläufe und API-Nutzung.
+
+## Zielarchitektur
+
+```text
+Flutter Desktop-App (Dart)
+  ├── eigene native Flutter-Oberfläche
+  ├── REST-Client → https://tt-tagebuch.de/api
+  ├── sicherer Token-Speicher des Betriebssystems
+  └── später: Socket.IO, Benachrichtigungen, Datei-/Druckfunktionen
+
+Bestehendes Node/Express-Backend
+  ├── JWT-Authentifizierung und Berechtigungsprüfung
+  ├── MySQL-Datenbank
+  └── bestehende REST- und Socket.IO-Schnittstellen
+```
+
+### Technische Festlegungen
+
+- Neues Projekt im Repository: `backend/desktop-app/`.
+- Flutter stable und Dart; Windows, macOS und Linux von Beginn an als Build-Ziele aktivieren.
+- `go_router` für Navigation, `flutter_riverpod` für App-Zustand und `Dio` für HTTP.
+- Datenmodelle, Repositorys und API-Client von Widgets trennen; DTOs nicht direkt in der UI verwenden.
+- API-URL ausschließlich per `--dart-define` bzw. Build-Konfiguration setzen, nie fest in Quellcode oder Installer einbauen.
+- JWT in `flutter_secure_storage` ablegen. Bei `401` Token entfernen und zur Anmeldung wechseln; Netzwerkfehler führen nicht zum Logout.
+- Requests senden den vom Backend unterstützten Header `Authorization: Bearer <token>`; kompatibel bleibt auch der Web-Header `authcode`.
+- Berechtigungen immer vom Backend erzwingen lassen. Die Flutter-Navigation blendet fehlende Rechte nur für eine bessere Bedienung aus.
+- Deutsch als erste Sprache; Übersetzungen von Beginn an über Flutter-Lokalisierung strukturieren.
+
+## Phasen und To-dos
+
+### Phase 0 – API und Produktumfang festziehen
+
+- [x] Desktop-MVP verbindlich auf **Login, Vereinskontext, Kalender, Spielplan, Mitglieder und Trainingsübersicht** begrenzen.
+- [x] Rollen für das MVP festlegen: einfaches Mitglied, Trainer und Vereinsverwaltung; pro Rolle die sichtbaren Bereiche definieren.
+- [x] Die verwendeten Endpunkte und Payloads gegen `docs/api_contract.md` und die echten Routen prüfen.
+- [x] Fehlende oder uneinheitliche API-Antworten als eigene Backend-Tickets erfassen, statt sie in der App zu umgehen.
+- [x] Gemeinsame Fehlercodes und Lade-/Leerezustände für die App festlegen.
+- [x] Datenschutz- und Offline-Anforderungen entscheiden: zunächst online-first, lokale Daten nur als Cache.
+
+### Phase 1 – Projektfundament
+
+- [x] Flutter-Projekt in `backend/desktop-app/` erzeugen und eine nachvollziehbare README mit Voraussetzungen erstellen.
+- [x] Paketstruktur anlegen: `core/`, `features/`, `data/`, `domain/`, `presentation/`.
+- [x] Build-Konfigurationen `development`, `staging` und `production` mit `API_BASE_URL` per Dart-Define einrichten.
+- [x] App-Theme, Typografie, responsive Desktop-Layout und zentrale Design-Tokens anlegen.
+- [x] Navigation mit öffentlichem Bereich und geschütztem App-Bereich aufsetzen.
+- [x] Produkt-Switch für Trainings-Tagebuch, TT Verein und Mein TT anlegen; Produktwechsel aktualisiert Kontext und Navigation. Rechtefilterung folgt mit Phase 2.
+- [x] Fehlerbehandlung, Logging ohne personenbezogene Daten und zentrale Ladeindikatoren implementieren.
+- [x] CI-Grundgerüst für Formatierung, Analyse und Tests anlegen.
+
+### Phase 2 – Anmeldung, Sitzung und Vereinskontext
+
+- [x] Login gegen `POST /api/auth/login` implementieren, inklusive „angemeldet bleiben“.
+- [x] Token sicher speichern, beim Start wiederherstellen und Sitzung mit `GET /api/session/status` prüfen.
+- [x] Logout über `POST /api/auth/logout` implementieren und lokale Zugangsdaten zuverlässig löschen.
+- [x] Passwort-vergessen- und Passwort-zurücksetzen-Flows als native Formulare ergänzen.
+- [x] Vereinsliste über `GET /api/clubs` laden und aktiven Verein persistent auswählen.
+- [x] Berechtigungen über `GET /api/permissions/:clubId` laden und die Navigation rollenabhängig aufbauen.
+- [x] Unit- und Integrationstests für Login, Tokenablauf, 401 und Vereinswechsel schreiben.
+
+### Phase 3 – Desktop-MVP: persönliche Organisation
+
+- [x] Startseite mit nächstem Training, nächstem Spiel, offenen Hinweisen und Schnellzugriffen erstellen.
+- [x] Kalenderansicht für Trainings-, Vereins- und Spieltermine umsetzen.
+- [x] Spielplan mit Saison- und Mannschaftsauswahl sowie korrekter Berliner Zeitzonenanzeige umsetzen.
+- [x] Mitgliederliste mit Suche und einer datensparsamen Detailansicht implementieren.
+- [x] Trainingsübersicht mit Gruppen, Zeiten und Trainingsstatistik für berechtigte Rollen implementieren.
+- [x] Für einfaches Mitglied den Bereich „Mein Verein“ mit persönlichen Terminen und Informationen priorisieren.
+- [x] Leere Zustände, fehlende Berechtigungen, langsame Verbindung und Serverfehler in allen MVP-Ansichten testen.
+
+### Phase 4 – Vereins- und Trainerfunktionen
+
+- [ ] Trainingstagebuch inklusive Anwesenheit, Aktivitäten und Gruppen als native Arbeitsansicht umsetzen.
+- [ ] Mitgliederverwaltung mit Bearbeiten, Bild-/Datei-Upload und Rechteprüfung erweitern.
+- [ ] Sammlungsbestellungen als gemeinsames Modul einplanen und implementieren: Wünsche, Artikelstatus, Rückfragen, Preise, Bestätigung und Zahlungsstatus.
+- [ ] Mannschaften, Spielberichte/Ergebnisse und Turniere in fachlich getrennten Features ergänzen.
+- [ ] Rechnungen, Kommunikation, Aufgaben und Archiv erst nach einem eigenen UX-Entwurf als weitere Feature-Wellen ergänzen.
+- [ ] Socket.IO für die Bereiche aktivieren, in denen aktuelle Daten tatsächlich einen Mehrwert bringen; REST bleibt die verlässliche Basis.
+
+### Phase 5 – echte Desktop-Mehrwerte
+
+- [ ] Systembenachrichtigungen für Terminänderungen, Rückfragen und neue Vereinsnachrichten einführen.
+- [ ] Tray-Icon mit „Heute“, Synchronisationsstatus und Schnellaktionen ergänzen.
+- [ ] Native Datei-Auswahl, Downloads, PDF-Export und Druckabläufe implementieren.
+- [ ] Fensterzustand, zuletzt gewählter Verein und bevorzugte Ansicht lokal speichern.
+- [ ] Offline-Cache für lesende Kernansichten konzipieren; Konfliktregeln vor schreibender Offline-Unterstützung festlegen.
+- [ ] Signierte Installer für Windows, macOS und Linux sowie eine sichere Update-Strategie vorbereiten.
+
+### Phase 6 – Qualität, Release und Betrieb
+
+- [ ] Widget-Tests für jede neue Ansicht und Repository-/API-Tests für kritische Datenflüsse ergänzen.
+- [ ] Integrationstests für Anmeldung, Vereinswechsel, Kalender und Spielplan aufsetzen.
+- [ ] Smoke-Tests auf Windows, macOS und Linux durchführen; dabei Skalierung, Tastaturnavigation und Zeitzonen prüfen.
+- [ ] Accessibility prüfen: Fokusführung, Kontraste, Screenreader-Beschriftungen und vollständig bedienbare Tastaturwege.
+- [ ] Release-Kanäle (intern/stabil), Versionsnummern, Fehlerberichte und Datenschutztexte definieren.
+- [ ] Pilot mit einem Verein durchführen und erst danach die nächste Paritätswelle freigeben.
+
+## Reihenfolge nach dem MVP
+
+1. Persönliche Funktionen: Mein Verein, Kalender, Spielplan und Benachrichtigungen.
+2. Trainer-Arbeitsabläufe: Trainingstagebuch, Anwesenheit, Gruppen und Trainingselemente.
+3. Vereinsverwaltung: Mitglieder, Kommunikation, Sammlungsbestellungen, Aufgaben und Dokumente.
+4. Komplexe Spezialfunktionen: Turniere, Rechnungen, Importe, externe myTischtennis-/click-TT-Abläufe und Offline-Schreiben.
+
+## Kritische vorhandene Referenzen
+
+- `backend/server.js` – zentrale API-Routen.
+- `backend/middleware/authMiddleware.js` und `backend/services/authService.js` – JWT- und Sitzungsverhalten.
+- `docs/api_contract.md` – aktueller API-Katalog.
+- `docs/socket_contract.md` – spätere Live-Updates.
+- `frontend/src/router.js` – fachliche Web-Bereiche und Berechtigungen als Referenz, nicht als UI-Vorlage.
+- `docs/simple-user-plan.md` und `docs/collective-orders-plan.md` – bereits geplante Nutzer- und Bestellabläufe.
+
+## Abnahmekriterien für Release 1
+
+- Die App ist eine eigenständige Flutter-Anwendung ohne WebView.
+- Login, sicherer Sitzungsspeicher und Logout funktionieren gegen die Produktions-API.
+- Ein Nutzer sieht ausschließlich die für seine Vereinsrolle erlaubten Bereiche.
+- Kalender, Spielplan, Mitglieder und Trainingsübersicht funktionieren auf allen drei Desktop-Plattformen.
+- `flutter analyze` und `flutter test` laufen fehlerfrei; je Plattform gibt es mindestens einen erfolgreichen manuellen Smoke-Test.

docs/FLUTTER_DESKTOP_MVP_SPEC.md

@@ -0,0 +1,114 @@
+# Flutter Desktop-App – Phase 0: MVP- und API-Spezifikation
+
+Stand: 30.07.2026  
+Geltung: Release 1 der eigenständigen Flutter-Desktop-App für Windows, macOS und Linux.
+
+## 1. Verbindlicher MVP-Umfang
+
+Die erste Version ist eine **online-first Flutter-App ohne WebView**. Sie verwendet die Produktions-API, speichert keine fachlichen Daten dauerhaft offline und bildet ausschließlich die folgenden Bereiche ab:
+
+| Bereich | Release-1-Umfang | Nicht Bestandteil von Release 1 |
+| --- | --- | --- |
+| Anmeldung | Login, Sitzung wiederherstellen, Logout, Passwort vergessen/zurücksetzen | Registrierung und Kontoaktivierung als eigener Folgeentscheid |
+| Vereinskontext | Verein wählen, Rechte laden, zuletzt gewählten Verein merken | Verein anlegen, Beitrittsfreigaben verwalten |
+| Startseite | Nächstes Training, nächstes Spiel, Anzahl ungelesener Hinweise, Schnellzugriffe | frei konfigurierbare Dashboards |
+| Kalender | Trainings-, Spiel- und Vereinsereignisse lesen; Monats-/Listenansicht | Ereignisse anlegen oder bearbeiten |
+| Spielplan | Saison, Mannschaft/Liga, Spiele und Ergebnisse lesen | CSV-Import, Tabellenabruf, Spielerzuordnung |
+| Mitglieder | Suche, Liste und datensparsame Detailansicht | Bearbeiten, Bildverwaltung, SEPA, Transfer |
+| Training | Trainingszeiten, Gruppen und Statistik lesen | Trainingstagebuch, Anwesenheit und Aktivitäten bearbeiten |
+| Mein Verein | Persönliche Übersicht, Inbox und eigene Terminantworten, sofern im Vereinskontext verfügbar | Profiländerung und Bestellabläufe als Folge-Release |
+
+Der MVP liefert damit für alle Rollen eine verlässliche tägliche Übersicht. Schreibende Verwaltungs- und Trainerabläufe folgen erst, wenn die lesenden Kernansichten auf allen Zielplattformen stabil sind.
+
+## 1.1 Produktwechsel in der Desktop-App
+
+Ein Benutzer kann innerhalb derselben Desktop-Installation zwischen den drei
+Produkten **Trainings-Tagebuch** (`trainer`), **TT Verein** (`club`) und
+**Mein TT** (`player`) wechseln. Der Wechsel ändert Produktname, Navigation,
+Startbereich und Kontext sofort; Datenbank, Benutzerkonto und API bleiben
+gemeinsam.
+
+Der Switch ist kein Berechtigungsmechanismus. Ab Phase 2 werden die sichtbaren
+Produkte und Menüpunkte zusätzlich aus Vereinszugang und den geladenen
+Berechtigungen gefiltert. Produkte ohne Zugriff dürfen dann nicht auswählbar
+sein.
+
+## 2. Rollen- und Sichtbarkeitsmatrix
+
+Die Berechtigungen kommen ausschließlich vom Backend (`GET /api/permissions/:clubId`). Die folgende Matrix definiert nur die Desktop-Navigation; sie ersetzt niemals eine Serverprüfung.
+
+| Bereich | Einfaches Mitglied | Trainer | Vereinsverwaltung |
+| --- | --- | --- | --- |
+| Startseite / Mein Verein | ja | ja | ja |
+| Kalender | wenn mindestens eine passende Leseberechtigung vorliegt | ja | ja |
+| Spielplan | mit `schedule.read` | mit `schedule.read` | mit `schedule.read` |
+| Mitglieder | nur eigene, persönliche Daten im MVP | mit `members.read` | mit `members.read` |
+| Training / Statistik | eigene bzw. freigegebene Ansicht | mit Trainings-/Statistikrecht | mit Trainings-/Statistikrecht |
+| Verwaltungsnavigation | nein | nur freigegebene Trainerbereiche | nur freigegebene Verwaltungsbereiche |
+
+**Navigationsregel:** Fehlt eine Berechtigung, erscheint der Bereich nicht im Hauptmenü. Ein direkter Aufruf zeigt einen neutralen „Kein Zugriff“-Zustand. Ein `403` des Servers wird nie als Clientfehler behandelt.
+
+## 3. Verifizierter API-Vertrag für Release 1
+
+Basis: `backend/server.js`, die zugehörigen Route-Dateien sowie `docs/api_contract.md`.
+
+### Authentifizierung und Kontext
+
+| Vorgang | Endpunkt | MVP-Verwendung |
+| --- | --- | --- |
+| Anmeldung | `POST /api/auth/login` | Payload `{ email, password, rememberMe }`; Antwort enthält `token` und `expiresAt`. |
+| Sitzung prüfen | `GET /api/session/status` | beim App-Start nach Wiederherstellung des Tokens. |
+| Abmelden | `POST /api/auth/logout` | Token serverseitig invalidieren, danach lokal löschen. |
+| Vereine | `GET /api/clubs` und `GET /api/clubs/:clubId` | Vereinsauswahl und Überschrift. |
+| Rechte | `GET /api/permissions/:clubId` | Menü und Feature-Gates aktualisieren. |
+
+### Fachliche Leseansichten
+
+| Bereich | Endpunkt | Hinweise |
+| --- | --- | --- |
+| Persönliche Übersicht | `GET /api/clubmembers/dashboard/:clubId` | Für „Mein Verein“ und Startseite; Antwortschema vor Phase 3 als DTO festschreiben. |
+| Inbox | `GET /api/clubmembers/inbox/:clubId` | Ungelesene Hinweise und Nachrichten. |
+| Terminantwort | `PUT /api/clubmembers/dashboard/:clubId/events/:eventId/response` | einzige MVP-Schreibaktion für das Mitglied. |
+| Kalenderereignisse | `GET /api/calendar-events/:clubId?year=YYYY` | Vereinsereignisse. |
+| Kalender-/Feiertage | `GET /api/calendar/club/:clubId/holidays?year=YYYY` | ergänzende Kalenderdaten. |
+| Spielplan | `GET /api/matches/leagues/:clubId/matches?seasonid=:id` | nur bei `schedule.read`; Anzeige immer in `Europe/Berlin`. |
+| Ligen | `GET /api/matches/leagues/current/:clubId` | Auswahl für Spielplan. |
+| Teams | `GET /api/club-teams/club/:clubId?seasonid=:id` | Mannschaftsauswahl. |
+| Mitglieder | `GET /api/clubmembers/get/:clubId/:showAll` | nur bei `members.read`; Standardwert `showAll=false`. |
+| Trainingsgruppen | `GET /api/training-groups/:clubId` | nur bei verfügbarer Leseberechtigung. |
+| Trainingszeiten | `GET /api/training-times/:clubId` | nur bei verfügbarer Leseberechtigung. |
+| Trainingsstatistik | `GET /api/training-stats/:clubId` | nur bei `statistics.read`. |
+
+### Verbindliche Request- und Fehlerregeln
+
+- Jeder authentifizierte Request sendet `authcode: <JWT>`; optional zusätzlich `userid`, wenn es für einen bestehenden Endpunkt benötigt wird.
+- `Authorization: Bearer <JWT>` wird nicht als alleiniger Standard eingesetzt, bis alle Controller einheitlich auf den authentifizierten Request-Kontext zugreifen.
+- `401`: gespeicherten Token entfernen und zur Anmeldung wechseln.
+- `403`: Zugriff verweigert anzeigen, Token behalten und Navigation bei nächster Rechteaktualisierung korrigieren.
+- Netzwerkfehler, Timeout oder `5xx`: kein Logout, klare Wiederholen-Aktion und ggf. Anzeige gecachter Daten.
+- Kein Request und kein Log darf Passwort, JWT, E-Mail-Adresse oder vollständige Mitgliederdaten protokollieren.
+
+## 4. Erfasste Backend-Tickets vor/parallel zu Phase 1
+
+| Priorität | Ticket | Befund / Akzeptanzkriterium |
+| --- | --- | --- |
+| P0 | Auth-Header vereinheitlichen | `calendarController.js` und `calendarEventController.js` lesen aktuell nur `req.headers.authcode`, obwohl `authMiddleware.js` auch Bearer-Tokens akzeptiert. Einen zentralen Token-/User-Kontext verwenden; danach funktionieren beide Headerformen in allen geschützten Routen gleich. |
+| P0 | Dashboard-DTO dokumentieren | Antwort von `GET /api/clubmembers/dashboard/:clubId` mit stabilen Feldern für nächste Termine, Inbox-Zähler und persönliches Mitglied dokumentieren und per Test absichern. |
+| P1 | Kalender-Read-Contract absichern | Response-Modelle von Kalenderereignissen, Feiertagen und importierten Spielen mit Beispielpayloads dokumentieren; Datum/Zeit als ISO-Wert mit klarer Zeitzonenregel. |
+| P1 | Berechtigungen je MVP-Endpunkt prüfen | Für Trainingszeiten/-gruppen und das Member-Dashboard explizit serverseitige Vereins- und Rechteprüfungen testen; Navigation allein ist keine Sicherheit. |
+| P2 | Einheitliches Fehlerformat | Kalender- und ältere Controller schrittweise an das dokumentierte Fehlerformat `{ success, code, params, error, message }` angleichen. |
+
+## 5. Datenschutz- und Offline-Entscheidung
+
+- **Online-first:** Release 1 benötigt eine Verbindung zur API für alle Fachinformationen.
+- Lokal bleiben ausschließlich: verschlüsselter JWT, nicht sensible App-Einstellungen (Theme, Fensterzustand, letzter Verein) sowie ein kurzlebiger, löschbarer Lesecache.
+- Keine Passwörter, Zahlungsdaten, Mitgliedsfotos, SEPA-Daten oder vollständigen Mitgliederlisten offline speichern.
+- Bei fehlender Verbindung zeigt die App klar „Offline – Datenstand von …“ und deaktiviert Aktionen, die eine API-Anfrage benötigen.
+- Offline-Schreiben, Konfliktauflösung und Hintergrundsynchronisation gehören ausdrücklich nicht zu Release 1.
+
+## 6. Definition of Ready für Phase 1
+
+- MVP-Umfang und Rollenmatrix dieses Dokuments sind akzeptiert.
+- P0-Backend-Tickets sind umgesetzt oder der Flutter-Client verwendet vorübergehend den verbindlichen `authcode`-Header.
+- Eine Testumgebung mit HTTPS-API und einem Testkonto je MVP-Rolle steht bereit.
+- API-Base-URL für Entwicklung, Staging und Produktion ist festgelegt.

docs/manual_sql_migrations.md

@@ -24,10 +24,10 @@ Sichere optionale Zuordnung eines Login-Kontos zu einem Vereinsmitglied für
 persönliche Mitgliederfunktionen:
 
 ```sql
-ALTER TABLE member
-  ADD COLUMN user_id INT NULL,
-  ADD UNIQUE KEY member_user_id_unique (user_id),
-  ADD CONSTRAINT member_user_id_fk FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE SET NULL;
+ALTER TABLE `member`
+  ADD COLUMN `user_id` INT NULL,
+  ADD UNIQUE KEY `member_user_id_unique` (`user_id`),
+  ADD CONSTRAINT `member_user_id_fk` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`) ON DELETE SET NULL;
 ```
 
 Bestehende Mitglieder bleiben zunächst unverknüpft. Die Zuordnung erfolgt
@@ -98,6 +98,24 @@ ALTER TABLE club_communication_recipients
   ADD INDEX club_communication_recipients_member_read (club_id, member_id, read_at);
 ```
 
+### Bestehende `calendar_events`-Tabelle an das aktuelle Modell anpassen
+
+Wenn die Tabelle vor der Kalendererweiterung angelegt wurde, fehlen die neuen
+Metadaten-Spalten. Die Migration ist additiv und lässt bestehende Termine
+unverändert:
+
+```sql
+ALTER TABLE `calendar_events`
+  ADD COLUMN IF NOT EXISTS `event_type` VARCHAR(32) NOT NULL DEFAULT 'club_event' AFTER `club_id`,
+  ADD COLUMN IF NOT EXISTS `status` VARCHAR(32) NOT NULL DEFAULT 'planning' AFTER `event_type`,
+  ADD COLUMN IF NOT EXISTS `description` TEXT NULL AFTER `title`,
+  ADD COLUMN IF NOT EXISTS `location` VARCHAR(255) NULL AFTER `description`,
+  ADD COLUMN IF NOT EXISTS `registration_deadline` DATE NULL AFTER `end_date`,
+  ADD COLUMN IF NOT EXISTS `organizer_user_id` INT NULL AFTER `registration_deadline`,
+  ADD COLUMN IF NOT EXISTS `category` VARCHAR(64) NULL AFTER `organizer_user_id`,
+  ADD COLUMN IF NOT EXISTS `notes` TEXT NULL AFTER `category`;
+```
+
 ## 2026-03-17
 
 ### `predefined_activities.exclude_from_stats`

frontend/src/components/schedule/ScheduleLayoutShell.vue

@@ -41,15 +41,15 @@
                 </div>
                 <div class="schedule-summary-item">
                     <span class="schedule-summary-label">{{ $t('schedule.matches') }}</span>
-                    <strong>{{ matchesCount }}</strong>
+                    <strong>{{ scheduleSummary.total }}</strong>
                 </div>
                 <div class="schedule-summary-item">
                     <span class="schedule-summary-label">{{ $t('schedule.completedShort') }}</span>
-                    <strong>{{ completedMatchesCount }}</strong>
+                    <strong>{{ scheduleSummary.completed }}</strong>
                 </div>
                 <div class="schedule-summary-item">
                     <span class="schedule-summary-label">{{ $t('schedule.pendingShort') }}</span>
-                    <strong>{{ pendingMatchesCount }}</strong>
+                    <strong>{{ scheduleSummary.pending }}</strong>
                 </div>
                 <div class="schedule-summary-item" v-if="nextScheduledMatchLabel">
                     <span class="schedule-summary-label">{{ $t('schedule.nextMatch') }}</span>
@@ -144,7 +144,7 @@
 
                 <div v-if="selectedLeague && selectedLeague !== '' && showTableTab" class="tab-navigation">
                     <button :class="['tab-button', { active: activeTab === 'schedule' }]" @click="$emit('update:active-tab', 'schedule')">
-                        📅 {{ $t('schedule.scheduleTab') }} <span class="tab-count">{{ matchesCount }}</span>
+                        📅 {{ $t('schedule.scheduleTab') }} <span class="tab-count">{{ scheduleSummary.total }}</span>
                     </button>
                     <button :class="['tab-button', { active: activeTab === 'table' }]" @click="$emit('update:active-tab', 'table')">
                         📊 {{ $t('schedule.tableTab') }} <span class="tab-count">{{ tableCount }}</span>
@@ -186,9 +186,13 @@ export default {
         galleryLoading: { type: Boolean, required: true },
         filteredScheduleTeamsCount: { type: Number, required: true },
         teamsCount: { type: Number, required: true },
-        matchesCount: { type: Number, required: true },
-        completedMatchesCount: { type: Number, required: true },
-        pendingMatchesCount: { type: Number, required: true },
+        scheduleSummary: {
+            type: Object,
+            required: true,
+            validator(value) {
+                return Number.isFinite(value?.total) && Number.isFinite(value?.completed) && Number.isFinite(value?.pending);
+            },
+        },
         nextScheduledMatchLabel: { type: String, default: '' },
         teamSearchQuery: { type: String, required: true },
         overallScheduleLabel: { type: String, required: true },

frontend/src/views/CalendarView.vue

@@ -317,7 +317,7 @@ export default {
     };
   },
   computed: {
-    ...mapGetters(['currentClub', 'currentClubName']),
+    ...mapGetters(['currentClub']),
     weekdays() {
       return WEEKDAY_KEYS.map(key => this.$t(`calendar.weekdays.${key}`));
     },
@@ -418,10 +418,6 @@ export default {
     }
   },
   methods: {
-    isOurTeam(teamName) {
-      if (!teamName || !this.currentClubName) return false;
-      return String(teamName).startsWith(this.currentClubName);
-    },
     async loadCalendarEvents() {
       if (!this.currentClub) {
         this.events = [];
@@ -775,9 +771,11 @@ export default {
     async loadMatchEvents() {
       const response = await apiClient.get(`/matches/leagues/${this.currentClub}/matches`);
       this.ensureSuccess(response, this.$t('calendar.sources.matches'));
-      return (response.data || [])
-        .filter(match => this.isOurTeam(match.homeTeam?.name) || this.isOurTeam(match.guestTeam?.name))
-        .map(match => {
+      // Der Endpunkt liefert bereits ausschließlich Spiele der eigenen
+      // Vereinsmannschaften. Ein zusätzlicher Client-Filter anhand des
+      // sichtbaren Vereinsnamens ist fehleranfällig (z. B. "TSV Bonames"
+      // gegenüber "TSV 1875 Bonames") und hat Punktspiele ausgeblendet.
+      return (response.data || []).map(match => {
         const date = this.parseDate(match.date);
         const home = match.homeTeam?.name || this.$t('calendar.match.home');
         const guest = match.guestTeam?.name || this.$t('calendar.match.guest');

frontend/src/views/ScheduleView.vue

@@ -9,9 +9,7 @@
             :gallery-loading="galleryLoading"
             :filtered-schedule-teams-count="filteredScheduleTeams.length"
             :teams-count="teams.length"
-            :matches-count="matches.length"
-            :completed-matches-count="completedMatchesCount"
-            :pending-matches-count="pendingMatchesCount"
+            :schedule-summary="scheduleSummary"
             :next-scheduled-match-label="nextScheduledMatchLabel"
             :team-search-query="teamSearchQuery"
             :overall-schedule-label="$t('schedule.overallSchedule')"
@@ -711,6 +709,13 @@ export default {
         pendingMatchesCount() {
             return this.matches.length - this.completedMatchesCount;
         },
+        scheduleSummary() {
+            return {
+                total: this.matches.length,
+                completed: this.completedMatchesCount,
+                pending: this.pendingMatchesCount,
+            };
+        },
         friendlyResultScore() {
             return this.calculateFriendlyResultScore(this.friendlyResultDialog.rows);
         },
@@ -755,9 +760,9 @@ export default {
                 : this.friendlyOnly
                     ? `Interne Freundschaftsspiele: ${this.matches.length}`
                 : this.$t('schedule.workspaceScheduleDescription', {
-                    matches: this.matches.length,
-                    completed: this.completedMatchesCount,
-                    pending: this.pendingMatchesCount
+                    matches: this.scheduleSummary.total,
+                    completed: this.scheduleSummary.completed,
+                    pending: this.scheduleSummary.pending
                 });
         },
         leagueTeamOptions() {