diff --git a/README.md b/README.md
index 80695d4..3c74fd9 100644
--- a/README.md
+++ b/README.md
@@ -111,7 +111,12 @@ flutter test
 Дополнительно тестами уже прикрыты:
 - typed parsing/load-state для основных backend-ответов;
 - geofence distance/runtime логика;
-- чистая логика форм расписаний и групп.
+- чистая логика форм расписаний и групп;
+- provider-мутаторы для расписаний, таймера 4h и API-ключей;
+- widget-сценарии форм домов, групп, расписаний и API-ключей;
+- widget-сценарии `RemoteScreen`, `GroupCard` и error/retry-потоков.
+
+Сейчас baseline клиента закрывается примерно `60` тестами и уже ловит regressions не только в helper-логике, но и в основных пользовательских сценариях.
 
 ## Настройка
 
@@ -134,6 +139,7 @@ API-ключи хранятся отдельно от конфигурации 
 - Целевая платформа сейчас Android.
 - Release APK пока подписывается debug-ключом из Flutter-шаблона.
 - Build info в APK показывает дату сборки и короткий git hash текущего `HEAD`. Если сборка делается поверх незакоммиченного рабочего дерева, hash будет от последнего коммита, а не от локальных незакоммиченных изменений.
+- Android-specific поведение реального background execution, уведомлений, runtime permissions и OEM battery restrictions пока подтверждается в основном ручными проверками на устройстве, а не automated integration-тестами.
 
 ## Лицензия
 
diff --git a/lib/features/remote/providers/remote_providers.dart b/lib/features/remote/providers/remote_providers.dart
index 181d1ed..712d002 100644
--- a/lib/features/remote/providers/remote_providers.dart
+++ b/lib/features/remote/providers/remote_providers.dart
@@ -112,7 +112,8 @@ class GroupsNotifier extends Notifier<List<IgnisGroup>> {
     _timer = Timer.periodic(const Duration(seconds: 10), (_) => refresh());
   }
 
-  void stopPolling() => _stopPolling();
+  void stopPolling({bool resetStatus = true}) =>
+      _stopPolling(resetStatus: resetStatus);
 
   void _stopPolling({bool resetStatus = true}) {
     _timer?.cancel();
diff --git a/lib/screens/api_keys_screen.dart b/lib/screens/api_keys_screen.dart
index f2d7843..33c0506 100644
--- a/lib/screens/api_keys_screen.dart
+++ b/lib/screens/api_keys_screen.dart
@@ -22,7 +22,7 @@ class _ApiKeysScreenState extends ConsumerState<ApiKeysScreen> {
   @override
   void initState() {
     super.initState();
-    _load();
+    Future<void>.microtask(_load);
   }
 
   Future<void> _load() async {
@@ -132,44 +132,46 @@ class _ApiKeysScreenState extends ConsumerState<ApiKeysScreen> {
       builder: (ctx) => StatefulBuilder(
         builder: (ctx, setDialogState) => AlertDialog(
           title: const Text('Новый API-ключ'),
-          content: Form(
-            key: formKey,
-            autovalidateMode: AutovalidateMode.onUserInteraction,
-            child: Column(
-              mainAxisSize: MainAxisSize.min,
-              children: [
-                TextFormField(
-                  controller: nameCtrl,
-                  decoration: const InputDecoration(
-                    labelText: 'Имя ключа',
-                    hintText: 'Например: Гость',
+          content: SingleChildScrollView(
+            child: Form(
+              key: formKey,
+              autovalidateMode: AutovalidateMode.onUserInteraction,
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  TextFormField(
+                    controller: nameCtrl,
+                    decoration: const InputDecoration(
+                      labelText: 'Имя ключа',
+                      hintText: 'Например: Гость',
+                    ),
+                    autofocus: true,
+                    validator: (value) {
+                      final normalized = value?.trim() ?? '';
+                      if (normalized.isEmpty) {
+                        return 'Укажите имя ключа';
+                      }
+                      if (normalized.length < 2) {
+                        return 'Слишком короткое имя';
+                      }
+                      return null;
+                    },
                   ),
-                  autofocus: true,
-                  validator: (value) {
-                    final normalized = value?.trim() ?? '';
-                    if (normalized.isEmpty) {
-                      return 'Укажите имя ключа';
-                    }
-                    if (normalized.length < 2) {
-                      return 'Слишком короткое имя';
-                    }
-                    return null;
-                  },
-                ),
-                const SizedBox(height: 12),
-                SwitchListTile(
-                  title: const Text('Дать права администратора'),
-                  subtitle: const Text(
-                    'Используйте только для доверенных людей',
+                  const SizedBox(height: 12),
+                  SwitchListTile(
+                    title: const Text('Дать права администратора'),
+                    subtitle: const Text(
+                      'Используйте только для доверенных людей',
+                    ),
+                    value: isAdmin,
+                    activeThumbColor: Colors.deepOrange,
+                    onChanged: isCreating
+                        ? null
+                        : (value) => setDialogState(() => isAdmin = value),
+                    contentPadding: EdgeInsets.zero,
                   ),
-                  value: isAdmin,
-                  activeThumbColor: Colors.deepOrange,
-                  onChanged: isCreating
-                      ? null
-                      : (value) => setDialogState(() => isAdmin = value),
-                  contentPadding: EdgeInsets.zero,
-                ),
-              ],
+                ],
+              ),
             ),
           ),
           actions: [
@@ -232,7 +234,9 @@ class _ApiKeysScreenState extends ConsumerState<ApiKeysScreen> {
       ),
     );
 
-    nameCtrl.dispose();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      nameCtrl.dispose();
+    });
   }
 
   Future<void> _revokeKey(ApiKeyInfo data) async {
diff --git a/lib/screens/remote_screen.dart b/lib/screens/remote_screen.dart
index f4b5186..c141e79 100644
--- a/lib/screens/remote_screen.dart
+++ b/lib/screens/remote_screen.dart
@@ -22,15 +22,18 @@ class RemoteScreen extends ConsumerStatefulWidget {
 }
 
 class _RemoteScreenState extends ConsumerState<RemoteScreen> {
+  late final GroupsNotifier _groupsNotifier;
+
   @override
   void initState() {
     super.initState();
-    Future.microtask(() => ref.read(groupsProvider.notifier).startPolling());
+    _groupsNotifier = ref.read(groupsProvider.notifier);
+    Future.microtask(_groupsNotifier.startPolling);
   }
 
   @override
   void dispose() {
-    ref.read(groupsProvider.notifier).stopPolling();
+    _groupsNotifier.stopPolling(resetStatus: false);
     super.dispose();
   }
 
diff --git a/lib/screens/schedules_screen.dart b/lib/screens/schedules_screen.dart
index 13f3a02..66c827c 100644
--- a/lib/screens/schedules_screen.dart
+++ b/lib/screens/schedules_screen.dart
@@ -21,7 +21,7 @@ class _SchedulesScreenState extends ConsumerState<SchedulesScreen> {
   @override
   void initState() {
     super.initState();
-    _load();
+    Future<void>.microtask(_load);
   }
 
   Future<void> _load() async {
diff --git a/test/error_retry_widget_test.dart b/test/error_retry_widget_test.dart
new file mode 100644
index 0000000..404e6ff
--- /dev/null
+++ b/test/error_retry_widget_test.dart
@@ -0,0 +1,154 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ignis_app/screens/api_keys_screen.dart';
+import 'package:ignis_app/screens/group_edit_screen.dart';
+import 'package:ignis_app/screens/home_edit_screen.dart';
+import 'package:ignis_app/screens/schedules_screen.dart';
+import 'package:ignis_app/services/settings_service.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'test_support.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  testWidgets('schedules screen retries after initial load error', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi();
+    api.tasksError = DioException(
+      requestOptions: RequestOptions(path: '/schedules/tasks'),
+      type: DioExceptionType.connectionError,
+      message: 'No route to host',
+    );
+
+    await pumpTestApp(tester, child: const SchedulesScreen(), api: api);
+    await tester.pumpAndSettle();
+    expect(find.text('Не удалось загрузить расписания'), findsOneWidget);
+
+    api.tasksError = null;
+    api.tasksData = {
+      'tasks': [
+        {
+          'id': 'job-1',
+          'target_id': 'kitchen',
+          'state': false,
+          'hour': '7',
+          'minute': '30',
+          'day_of_week': '1,2,3',
+          'type': 'cron',
+        },
+      ],
+    };
+
+    await tester.tap(find.text('Повторить'));
+    await tester.pumpAndSettle();
+    expect(find.text('Выключить группу kitchen'), findsOneWidget);
+  });
+
+  testWidgets('api keys screen retries after initial load error', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi();
+    api.apiKeysError = DioException(
+      requestOptions: RequestOptions(path: '/api-keys'),
+      type: DioExceptionType.connectionError,
+      message: 'No route to host',
+    );
+
+    await pumpTestApp(tester, child: const ApiKeysScreen(), api: api);
+    await tester.pumpAndSettle();
+    expect(find.text('Не удалось загрузить API-ключи'), findsOneWidget);
+
+    api.apiKeysError = null;
+    api.apiKeysData = {
+      'keys': [
+        {'name': 'Guest', 'key': 'secret', 'is_active': true},
+      ],
+    };
+
+    await tester.tap(find.text('Повторить'));
+    await tester.pumpAndSettle();
+    expect(find.text('Guest'), findsOneWidget);
+  });
+
+  testWidgets('group edit screen shows snackbar when rescan fails', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(devicesData: {'devices': <Object>[]});
+    api.rescanNetworkError = DioException(
+      requestOptions: RequestOptions(path: '/devices/rescan'),
+      type: DioExceptionType.connectionError,
+      message: 'No route to host',
+    );
+
+    await pumpTestApp(tester, child: const GroupEditScreen(), api: api);
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byTooltip('Пересканировать сеть'));
+    await tester.pumpAndSettle();
+
+    expect(find.textContaining('Ошибка сканирования'), findsOneWidget);
+  });
+
+  testWidgets('home edit screen shows save error when credentials fail', (
+    tester,
+  ) async {
+    SharedPreferences.setMockInitialValues({});
+    final settingsService = SettingsService(
+      credentialsStorage: InMemoryCredentialsStorage(),
+    );
+    final api = FakeIgnisApi();
+    api.authError = DioException(
+      requestOptions: RequestOptions(path: '/auth/me'),
+      type: DioExceptionType.badResponse,
+      response: Response(
+        requestOptions: RequestOptions(path: '/auth/me'),
+        statusCode: 403,
+      ),
+    );
+
+    await pumpTestApp(
+      tester,
+      api: api,
+      settingsService: settingsService,
+      child: Builder(
+        builder: (context) => Scaffold(
+          body: Center(
+            child: ElevatedButton(
+              onPressed: () => Navigator.of(
+                context,
+              ).push(MaterialPageRoute(builder: (_) => const HomeEditScreen())),
+              child: const Text('open'),
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.text('open'));
+    await tester.pumpAndSettle();
+
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Название'),
+      'Дом',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Адрес сервера'),
+      'ignis.akokos.ru',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'API Key'),
+      'wrong-key',
+    );
+
+    final saveButton = find.widgetWithText(ElevatedButton, 'ДОБАВИТЬ');
+    await tester.ensureVisible(saveButton);
+    await tester.tap(saveButton);
+    await tester.pumpAndSettle();
+
+    expect(find.textContaining('Не удалось сохранить дом'), findsOneWidget);
+    expect(await settingsService.getHomes(), isEmpty);
+  });
+}
diff --git a/test/forms_widget_test.dart b/test/forms_widget_test.dart
new file mode 100644
index 0000000..c5aa756
--- /dev/null
+++ b/test/forms_widget_test.dart
@@ -0,0 +1,191 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ignis_app/screens/api_keys_screen.dart';
+import 'package:ignis_app/screens/group_edit_screen.dart';
+import 'package:ignis_app/screens/home_edit_screen.dart';
+import 'package:ignis_app/screens/schedules_screen.dart';
+import 'package:ignis_app/services/settings_service.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'test_support.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  testWidgets('schedules screen creates one-shot schedule for selected group', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(
+      tasksData: {'tasks': <Object>[]},
+      groupsData: {
+        'bedroom': {'name': 'Спальня'},
+      },
+    );
+
+    await pumpTestApp(tester, child: const SchedulesScreen(), api: api);
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byIcon(Icons.add));
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byType(DropdownButtonFormField<String>));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('Спальня').last);
+    await tester.pumpAndSettle();
+
+    final createScheduleButton = find.widgetWithText(
+      ElevatedButton,
+      'СОЗДАТЬ РАСПИСАНИЕ',
+    );
+    await tester.ensureVisible(createScheduleButton);
+    await tester.tap(createScheduleButton);
+    await tester.pumpAndSettle();
+
+    expect(api.scheduledOnceParams, isNotNull);
+    expect(api.scheduledOnceParams, containsPair('target_id', 'bedroom'));
+    expect(api.scheduledOnceParams, containsPair('is_group', true));
+    expect(api.scheduledOnceParams?['run_at'], isA<String>());
+  });
+
+  testWidgets('group edit screen auto-generates id and creates group', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(
+      devicesData: {
+        'devices': [
+          {'mac': 'AA:BB', 'name': 'Лампа 1'},
+        ],
+      },
+      groupsData: <Object>[],
+    );
+
+    await pumpTestApp(tester, child: const GroupEditScreen(), api: api);
+    await tester.pumpAndSettle();
+
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Название группы'),
+      'Спальня родителей',
+    );
+    await tester.pump();
+
+    expect(find.text('spalnya-roditeley'), findsOneWidget);
+
+    await tester.tap(find.text('Лампа 1'));
+    await tester.pump();
+
+    await tester.tap(find.text('СОЗДАТЬ ГРУППУ'));
+    await tester.pumpAndSettle();
+
+    expect(api.createdGroupId, 'spalnya-roditeley');
+    expect(api.createdGroupName, 'Спальня родителей');
+    expect(api.createdGroupMacs, ['AA:BB']);
+  });
+
+  testWidgets('api keys screen validates and shows created key banner', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(apiKeysData: {'keys': <Object>[]});
+
+    await pumpTestApp(tester, child: const ApiKeysScreen(), api: api);
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byIcon(Icons.add));
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.text('Создать'));
+    await tester.pumpAndSettle();
+    expect(find.text('Укажите имя ключа'), findsOneWidget);
+
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Имя ключа'),
+      'Guest',
+    );
+    await tester.tap(find.text('Дать права администратора'));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('Создать'));
+    await tester.pumpAndSettle();
+
+    expect(api.createdApiKeyName, 'Guest');
+    expect(api.createdApiKeyIsAdmin, isTrue);
+    expect(find.textContaining('Новый ключ создан'), findsOneWidget);
+    expect(find.textContaining('Guest_token'), findsOneWidget);
+  });
+
+  testWidgets('home edit screen validates fields and saves normalized home', (
+    tester,
+  ) async {
+    SharedPreferences.setMockInitialValues({});
+    final settingsService = SettingsService(
+      credentialsStorage: InMemoryCredentialsStorage(),
+    );
+    final api = FakeIgnisApi(authData: {'is_admin': true, 'name': 'owner'});
+
+    await pumpTestApp(
+      tester,
+      api: api,
+      settingsService: settingsService,
+      child: Builder(
+        builder: (context) => Scaffold(
+          body: Center(
+            child: ElevatedButton(
+              onPressed: () => Navigator.of(
+                context,
+              ).push(MaterialPageRoute(builder: (_) => const HomeEditScreen())),
+              child: const Text('open'),
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.text('open'));
+    await tester.pumpAndSettle();
+
+    final saveHomeButton = find.widgetWithText(ElevatedButton, 'ДОБАВИТЬ');
+    await tester.tap(saveHomeButton);
+    await tester.pumpAndSettle();
+    expect(find.text('Укажите название дома'), findsOneWidget);
+    expect(find.text('Укажите адрес сервера'), findsOneWidget);
+    expect(find.text('Укажите API key'), findsOneWidget);
+
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Название'),
+      'Квартира',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Адрес сервера'),
+      'ignis.akokos.ru/',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'API Key'),
+      'secret-key',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Широта'),
+      '55.75',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Долгота'),
+      '37.61',
+    );
+    await tester.pump();
+
+    await tester.tap(find.text('Выключать свет при уходе'));
+    await tester.pump();
+    await tester.ensureVisible(saveHomeButton);
+    await tester.tap(saveHomeButton);
+    await tester.pumpAndSettle();
+
+    final homes = await settingsService.getHomes();
+    final savedHome = homes.single;
+    final savedApiKey = await settingsService.getHomeApiKey(savedHome.id);
+
+    expect(homes, hasLength(1));
+    expect(savedHome.name, 'Квартира');
+    expect(savedHome.url, 'https://ignis.akokos.ru');
+    expect(savedHome.latitude, 55.75);
+    expect(savedHome.longitude, 37.61);
+    expect(savedHome.geofenceEnabled, isTrue);
+    expect(savedApiKey, 'secret-key');
+  });
+}
diff --git a/test/provider_mutation_test.dart b/test/provider_mutation_test.dart
new file mode 100644
index 0000000..dfaae59
--- /dev/null
+++ b/test/provider_mutation_test.dart
@@ -0,0 +1,90 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ignis_app/app/load_state.dart';
+import 'package:ignis_app/providers/providers.dart';
+
+import 'test_support.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  test('tasks addOnce sends runAt and reloads tasks', () async {
+    final api = FakeIgnisApi(tasksData: {'tasks': <Object>[]});
+    final container = createTestContainer(api);
+
+    await container
+        .read(tasksProvider.notifier)
+        .addOnce(
+          targetId: 'bedroom',
+          targetState: false,
+          runAt: '2026-05-01T18:00:00Z',
+        );
+
+    expect(api.scheduledOnceParams, isNotNull);
+    expect(api.scheduledOnceParams, containsPair('target_id', 'bedroom'));
+    expect(api.scheduledOnceParams, containsPair('state', false));
+    expect(
+      api.scheduledOnceParams,
+      containsPair('run_at', '2026-05-01T18:00:00Z'),
+    );
+    expect(api.scheduledOnceParams, containsPair('is_group', true));
+    expect(container.read(tasksProvider).status, LoadStatus.empty);
+  });
+
+  test(
+    'tasks addCron sends normalized cron params and reloads tasks',
+    () async {
+      final api = FakeIgnisApi(tasksData: {'tasks': <Object>[]});
+      final container = createTestContainer(api);
+
+      await container
+          .read(tasksProvider.notifier)
+          .addCron(
+            targetId: 'kitchen',
+            hour: '7',
+            minute: '30',
+            dayOfWeek: '1,2,3,4,5',
+            targetState: true,
+          );
+
+      expect(api.scheduledCronParams, isNotNull);
+      expect(api.scheduledCronParams, containsPair('target_id', 'kitchen'));
+      expect(api.scheduledCronParams, containsPair('hour', '7'));
+      expect(api.scheduledCronParams, containsPair('minute', '30'));
+      expect(api.scheduledCronParams, containsPair('day_of_week', '1,2,3,4,5'));
+      expect(api.scheduledCronParams, containsPair('state', true));
+      expect(api.scheduledCronParams, containsPair('is_group', true));
+      expect(container.read(tasksProvider).status, LoadStatus.empty);
+    },
+  );
+
+  test('groups setTimer4h toggles on and schedules auto-off', () async {
+    final api = FakeIgnisApi(tasksData: {'tasks': <Object>[]});
+    final container = createTestContainer(api);
+
+    await container.read(groupsProvider.notifier).setTimer4h('hall');
+
+    expect(api.controlledGroupId, 'hall');
+    expect(api.controlGroupParams, containsPair('state', true));
+    expect(api.scheduledOnceParams, containsPair('target_id', 'hall'));
+    expect(api.scheduledOnceParams, containsPair('state', false));
+    expect(api.scheduledOnceParams, containsPair('hours_from_now', 4));
+    expect(api.scheduledOnceParams, containsPair('is_group', true));
+  });
+
+  test('api key create returns token and refreshes list', () async {
+    final api = FakeIgnisApi(apiKeysData: {'keys': <Object>[]});
+    final container = createTestContainer(api);
+
+    final createdKey = await container
+        .read(apiKeysProvider.notifier)
+        .create('Guest', isAdmin: true);
+
+    expect(createdKey, 'Guest_token');
+    expect(api.createdApiKeyName, 'Guest');
+    expect(api.createdApiKeyIsAdmin, isTrue);
+    final state = container.read(apiKeysProvider);
+    expect(state.status, LoadStatus.data);
+    expect(state.data.single.name, 'Guest');
+    expect(state.data.single.isAdmin, isTrue);
+  });
+}
diff --git a/test/remote_and_group_widget_test.dart b/test/remote_and_group_widget_test.dart
new file mode 100644
index 0000000..7758a24
--- /dev/null
+++ b/test/remote_and_group_widget_test.dart
@@ -0,0 +1,215 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ignis_app/models/ignis_group.dart';
+import 'package:ignis_app/providers/providers.dart';
+import 'package:ignis_app/screens/remote_screen.dart';
+import 'package:ignis_app/services/settings_service.dart';
+import 'package:ignis_app/widgets/group_card.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'test_support.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  testWidgets('remote screen shows api keys menu for admin only', (
+    tester,
+  ) async {
+    final adminApi = FakeIgnisApi(
+      authData: {'is_admin': true, 'name': 'owner'},
+      groupsData: <Object>[],
+    );
+    final adminContainer = await _pumpRemoteScreen(
+      tester,
+      api: adminApi,
+      settingsService: await _seedSettingsService(),
+    );
+    await adminContainer.read(authInfoProvider.notifier).load();
+    await tester.pump();
+
+    await tester.tap(find.byIcon(Icons.more_vert));
+    await tester.pumpAndSettle();
+    expect(find.text('API-ключи'), findsOneWidget);
+
+    await tester.tapAt(const Offset(10, 10));
+    await tester.pumpAndSettle();
+
+    final guestApi = FakeIgnisApi(
+      authData: {'is_admin': false, 'name': 'guest'},
+      groupsData: <Object>[],
+    );
+    final guestContainer = await _pumpRemoteScreen(
+      tester,
+      api: guestApi,
+      settingsService: await _seedSettingsService(),
+    );
+    await guestContainer.read(authInfoProvider.notifier).load();
+    await tester.pump();
+
+    await tester.tap(find.byIcon(Icons.more_vert));
+    await tester.pumpAndSettle();
+    expect(find.text('API-ключи'), findsNothing);
+  });
+
+  testWidgets('remote screen deletes group after confirmation', (tester) async {
+    final api = FakeIgnisApi(
+      authData: {'is_admin': true, 'name': 'owner'},
+      groupsData: {
+        'kitchen': {
+          'name': 'Kitchen',
+          'macs': ['AA:BB'],
+        },
+      },
+    );
+    final container = await _pumpRemoteScreen(
+      tester,
+      api: api,
+      settingsService: await _seedSettingsService(),
+    );
+
+    await container.read(groupsProvider.notifier).refresh();
+    await tester.pump(const Duration(milliseconds: 300));
+
+    expect(find.text('Kitchen'), findsOneWidget);
+
+    await tester.drag(find.text('Kitchen'), const Offset(-500, 0));
+    await tester.pumpAndSettle();
+    expect(find.text('Удалить группу?'), findsOneWidget);
+
+    await tester.tap(find.text('Удалить'));
+    await tester.pumpAndSettle();
+
+    expect(api.deletedGroupId, 'kitchen');
+    expect(find.text('Kitchen'), findsNothing);
+  });
+
+  testWidgets('group card toggles power and creates 4 hour timer', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(tasksData: {'tasks': <Object>[]});
+    await pumpTestApp(
+      tester,
+      api: api,
+      child: Scaffold(
+        body: GroupCard(
+          group: const IgnisGroup(
+            id: 'hall',
+            name: 'Hall',
+            state: IgnisGroupState(isOn: true, brightness: 50),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.byIcon(Icons.timer));
+    await tester.pumpAndSettle();
+    expect(api.controlledGroupId, 'hall');
+    expect(api.controlGroupParams, containsPair('state', true));
+    expect(api.scheduledOnceParams, containsPair('target_id', 'hall'));
+    expect(api.scheduledOnceParams, containsPair('hours_from_now', 4));
+
+    await tester.tap(find.byType(Switch));
+    await tester.pumpAndSettle();
+    expect(api.controlGroupParams, containsPair('state', false));
+  });
+
+  testWidgets('group card loads scenes and applies selected scene', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(scenesData: {'party': 'Party'});
+    await pumpTestApp(
+      tester,
+      api: api,
+      child: Scaffold(
+        body: GroupCard(
+          group: const IgnisGroup(
+            id: 'hall',
+            name: 'Hall',
+            state: IgnisGroupState(isOn: true),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.text('Сцена'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.text('Party'), findsOneWidget);
+    await tester.tap(find.text('Party'));
+    await tester.pumpAndSettle();
+
+    expect(api.controlledGroupId, 'hall');
+    expect(api.controlGroupParams, containsPair('scene', 'party'));
+  });
+
+  testWidgets('group card shows retry when scenes fail to load', (
+    tester,
+  ) async {
+    final api = FakeIgnisApi(scenesData: {'party': 'Party'});
+    api.scenesError = DioException(
+      requestOptions: RequestOptions(path: '/devices/scenes'),
+      type: DioExceptionType.connectionError,
+      message: 'No route to host',
+    );
+
+    await pumpTestApp(
+      tester,
+      api: api,
+      child: Scaffold(
+        body: GroupCard(
+          group: const IgnisGroup(
+            id: 'hall',
+            name: 'Hall',
+            state: IgnisGroupState(isOn: true),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.text('Сцена'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+    expect(find.text('Не удалось загрузить сцены'), findsOneWidget);
+
+    api.scenesError = null;
+    await tester.tap(find.text('Повторить'));
+    await tester.pumpAndSettle();
+    expect(find.text('Party'), findsOneWidget);
+  });
+}
+
+Future<ProviderContainer> _pumpRemoteScreen(
+  WidgetTester tester, {
+  required FakeIgnisApi api,
+  required SettingsService settingsService,
+}) async {
+  final container = createTestContainer(api, settingsService: settingsService);
+  await container.read(currentHomeProvider.notifier).load();
+
+  await tester.pumpWidget(
+    UncontrolledProviderScope(
+      container: container,
+      child: const MaterialApp(home: RemoteScreen()),
+    ),
+  );
+  await tester.pump();
+  await tester.pump(const Duration(milliseconds: 100));
+  return container;
+}
+
+Future<SettingsService> _seedSettingsService() async {
+  SharedPreferences.setMockInitialValues({
+    'ignis_homes':
+        '[{"id":"home-1","name":"Home 1","url":"https://one.example","geofenceEnabled":false}]',
+    'ignis_current_home_id': 'home-1',
+  });
+
+  final settingsService = SettingsService(
+    credentialsStorage: InMemoryCredentialsStorage(),
+  );
+  await settingsService.setHomeApiKey('home-1', 'key-1');
+  return settingsService;
+}
diff --git a/test/test_support.dart b/test/test_support.dart
new file mode 100644
index 0000000..54167d2
--- /dev/null
+++ b/test/test_support.dart
@@ -0,0 +1,409 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ignis_app/providers/providers.dart';
+import 'package:ignis_app/services/api_client.dart';
+import 'package:ignis_app/services/credentials_storage.dart';
+import 'package:ignis_app/services/settings_service.dart';
+
+class InMemoryCredentialsStorage implements CredentialsStorage {
+  final Map<String, String> _apiKeys = {};
+
+  @override
+  Future<String?> getApiKey(String homeId) async => _apiKeys[homeId];
+
+  @override
+  Future<void> setApiKey(String homeId, String apiKey) async {
+    _apiKeys[homeId] = apiKey;
+  }
+
+  @override
+  Future<void> deleteApiKey(String homeId) async {
+    _apiKeys.remove(homeId);
+  }
+}
+
+class FakeIgnisApi extends IgnisApi {
+  Object? groupsData;
+  Object? groupStatusData;
+  Object? devicesData;
+  Object? scenesData;
+  Object? tasksData;
+  Object? statsData;
+  Object? eventLogData;
+  Object? apiKeysData;
+  Object? authData;
+
+  Object? devicesError;
+  Object? scenesError;
+  Object? tasksError;
+  Object? statsError;
+  Object? eventLogError;
+  Object? apiKeysError;
+  Object? authError;
+  Object? groupsError;
+  Object? groupStatusError;
+  Object? controlGroupError;
+  Object? cancelTaskError;
+  Object? revokeApiKeyError;
+  Object? activateApiKeyError;
+  Object? createApiKeyError;
+  Object? createGroupError;
+  Object? deleteGroupError;
+  Object? scheduleOnceError;
+  Object? scheduleCronError;
+  Object? rescanNetworkError;
+
+  String? controlledGroupId;
+  Map<String, dynamic>? controlGroupParams;
+  int? requestedDays;
+  int? requestedLimit;
+  String? cancelledJobId;
+  String? revokedApiKey;
+  String? activatedApiKey;
+  String? createdApiKeyName;
+  bool? createdApiKeyIsAdmin;
+  String? createdGroupId;
+  String? createdGroupName;
+  List<String>? createdGroupMacs;
+  String? deletedGroupId;
+  Map<String, dynamic>? scheduledOnceParams;
+  Map<String, dynamic>? scheduledCronParams;
+  int rescanCalls = 0;
+
+  FakeIgnisApi({
+    this.groupsData,
+    this.groupStatusData,
+    this.devicesData,
+    this.scenesData,
+    this.tasksData,
+    this.statsData,
+    this.eventLogData,
+    this.apiKeysData,
+    this.authData,
+  });
+
+  @override
+  Future<Response> getAuthMe() async {
+    final error = authError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/auth/me'),
+      data: authData ?? <String, dynamic>{'is_admin': false},
+    );
+  }
+
+  @override
+  Future<void> validateCredentials(String baseUrl, String apiKey) async {
+    final error = authError;
+    if (error != null) throw error;
+  }
+
+  @override
+  Future<Response> getDevices() async {
+    final error = devicesError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/devices'),
+      data: devicesData ?? <String, dynamic>{'devices': <Object>[]},
+    );
+  }
+
+  @override
+  Future<Response> getScenes() async {
+    final error = scenesError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/devices/scenes'),
+      data: scenesData ?? <Object>[],
+    );
+  }
+
+  @override
+  Future<Response> getGroups() async {
+    final error = groupsError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/devices/groups'),
+      data: groupsData ?? <Object>[],
+    );
+  }
+
+  @override
+  Future<Response> getGroupStatus(String id) async {
+    final error = groupStatusError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/control/group/$id/status'),
+      data:
+          groupStatusData ??
+          {
+            'results': [
+              {
+                'status': {'state': false, 'dimming': 100, 'temp': 4000},
+              },
+            ],
+          },
+    );
+  }
+
+  @override
+  Future<Response> controlGroup(String id, Map<String, dynamic> params) async {
+    controlledGroupId = id;
+    controlGroupParams = params;
+    final error = controlGroupError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/control/group/$id'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> getTasks() async {
+    final error = tasksError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/schedules/tasks'),
+      data: tasksData ?? <String, dynamic>{'tasks': <Object>[]},
+    );
+  }
+
+  @override
+  Future<Response> cancelTask(String jobId) async {
+    cancelledJobId = jobId;
+    final error = cancelTaskError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/schedules/$jobId'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> scheduleOnce(Map<String, dynamic> params) async {
+    scheduledOnceParams = Map<String, dynamic>.from(params);
+    final error = scheduleOnceError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/schedules/once'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> scheduleCron(Map<String, dynamic> params) async {
+    scheduledCronParams = Map<String, dynamic>.from(params);
+    final error = scheduleCronError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/schedules/cron'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> getStatsSummary({int days = 7}) async {
+    requestedDays = days;
+    final error = statsError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/stats/summary'),
+      data: statsData,
+    );
+  }
+
+  @override
+  Future<Response> getStatsLog({int limit = 100}) async {
+    requestedLimit = limit;
+    final error = eventLogError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/stats/log'),
+      data: eventLogData,
+    );
+  }
+
+  @override
+  Future<Response> getApiKeys() async {
+    final error = apiKeysError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/api-keys'),
+      data: apiKeysData ?? <String, dynamic>{'keys': <Object>[]},
+    );
+  }
+
+  @override
+  Future<Response> createApiKey(String name, {bool isAdmin = false}) async {
+    createdApiKeyName = name;
+    createdApiKeyIsAdmin = isAdmin;
+    final error = createApiKeyError;
+    if (error != null) throw error;
+
+    final newKey = '${name}_token';
+    apiKeysData = {
+      'keys': [
+        ...(apiKeysData is Map
+            ? List<Map<String, dynamic>>.from(
+                (apiKeysData as Map)['keys'] as List? ?? const [],
+              )
+            : const <Map<String, dynamic>>[]),
+        {'name': name, 'key': newKey, 'is_admin': isAdmin, 'is_active': true},
+      ],
+    };
+
+    return Response(
+      requestOptions: RequestOptions(path: '/api-keys'),
+      data: <String, dynamic>{'key': newKey},
+    );
+  }
+
+  @override
+  Future<Response> revokeApiKey(String key) async {
+    revokedApiKey = key;
+    final error = revokeApiKeyError;
+    if (error != null) throw error;
+    apiKeysData = _mapApiKeys(
+      apiKeysData,
+      (item) => item['key'] == key ? {...item, 'is_active': false} : item,
+    );
+    return Response(
+      requestOptions: RequestOptions(path: '/api-keys/revoke'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> activateApiKey(String key) async {
+    activatedApiKey = key;
+    final error = activateApiKeyError;
+    if (error != null) throw error;
+    apiKeysData = _mapApiKeys(
+      apiKeysData,
+      (item) => item['key'] == key ? {...item, 'is_active': true} : item,
+    );
+    return Response(
+      requestOptions: RequestOptions(path: '/api-keys/activate'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> createGroup(
+    String id,
+    String name,
+    List<String> macs,
+  ) async {
+    createdGroupId = id;
+    createdGroupName = name;
+    createdGroupMacs = List<String>.from(macs);
+    final error = createGroupError;
+    if (error != null) throw error;
+    groupsData = _addGroup(groupsData, id, name, macs);
+    return Response(
+      requestOptions: RequestOptions(path: '/devices/groups'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> deleteGroup(String groupId) async {
+    deletedGroupId = groupId;
+    final error = deleteGroupError;
+    if (error != null) throw error;
+    groupsData = _removeGroup(groupsData, groupId);
+    return Response(
+      requestOptions: RequestOptions(path: '/devices/groups/$groupId'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+
+  @override
+  Future<Response> rescanNetwork() async {
+    rescanCalls += 1;
+    final error = rescanNetworkError;
+    if (error != null) throw error;
+    return Response(
+      requestOptions: RequestOptions(path: '/devices/rescan'),
+      data: <String, dynamic>{'ok': true},
+    );
+  }
+}
+
+ProviderContainer createTestContainer(
+  FakeIgnisApi api, {
+  SettingsService? settingsService,
+}) {
+  final overrides = [apiProvider.overrideWithValue(api)];
+  if (settingsService != null) {
+    overrides.add(settingsServiceProvider.overrideWithValue(settingsService));
+  }
+
+  final container = ProviderContainer(overrides: overrides);
+  addTearDown(container.dispose);
+  return container;
+}
+
+Future<ProviderContainer> pumpTestApp(
+  WidgetTester tester, {
+  required Widget child,
+  FakeIgnisApi? api,
+  SettingsService? settingsService,
+}) async {
+  final container = createTestContainer(
+    api ?? FakeIgnisApi(),
+    settingsService: settingsService,
+  );
+
+  await tester.pumpWidget(
+    UncontrolledProviderScope(
+      container: container,
+      child: MaterialApp(home: child),
+    ),
+  );
+  await tester.pump();
+  return container;
+}
+
+Object _mapApiKeys(
+  Object? source,
+  Map<String, dynamic> Function(Map<String, dynamic>) transform,
+) {
+  final current = source is Map
+      ? List<Map<String, dynamic>>.from(source['keys'] as List? ?? const [])
+      : <Map<String, dynamic>>[];
+  return {
+    'keys': current
+        .map((item) => transform(Map<String, dynamic>.from(item)))
+        .toList(),
+  };
+}
+
+Object _addGroup(Object? source, String id, String name, List<String> macs) {
+  if (source is Map) {
+    final next = Map<String, dynamic>.from(source);
+    next[id] = {'name': name, 'macs': macs};
+    return next;
+  }
+
+  final list = source is List ? List<Object>.from(source) : <Object>[];
+  list.add({'id': id, 'name': name, 'macs': macs});
+  return list;
+}
+
+Object _removeGroup(Object? source, String id) {
+  if (source is Map) {
+    final next = Map<String, dynamic>.from(source);
+    next.remove(id);
+    return next;
+  }
+
+  if (source is List) {
+    return List<Object>.from(source)
+      ..removeWhere((item) => item is Map && item['id']?.toString() == id);
+  }
+
+  return <Object>[];
+}