fix: stabilize auth and home error flows

lib/providers/providers.dart

@@ -55,6 +55,27 @@ class CurrentHomeNotifier extends Notifier<HomeConfig?> {
     await _initApi(home);
   }
 
+  /// Выбрать дом как активный и сразу проверить auth-state.
+  /// Если `auth/me` падает, откатываемся к предыдущему дому и auth-state.
+  Future<void> select(HomeConfig home) async {
+    final previousHome = state;
+    final previousAuthState = ref.read(authInfoProvider);
+
+    try {
+      await switchTo(home);
+      await ref.read(authInfoProvider.notifier).load(failOnError: true);
+    } catch (error) {
+      await _restoreSelection(previousHome);
+      ref.read(authInfoProvider.notifier).restore(previousAuthState);
+      rethrow;
+    }
+  }
+
+  Future<void> clear() async {
+    await ref.read(settingsServiceProvider).setCurrentHomeId(null);
+    state = null;
+  }
+
   /// Инициализировать API-клиент текущим домом
   Future<void> _initApi(HomeConfig home) async {
     final apiKey = await ref
@@ -62,6 +83,18 @@ class CurrentHomeNotifier extends Notifier<HomeConfig?> {
         .requireHomeApiKey(home.id);
     ref.read(apiProvider).init(home.url, apiKey);
   }
+
+  Future<void> _restoreSelection(HomeConfig? home) async {
+    if (home == null) {
+      await clear();
+      return;
+    }
+
+    final svc = ref.read(settingsServiceProvider);
+    await svc.setCurrentHomeId(home.id);
+    state = home;
+    await _initApi(home);
+  }
 }
 
 // ─── Список домов ────────────────────────────────────────────
@@ -798,26 +831,35 @@ class ApiKeysNotifier extends Notifier<LoadState<List<ApiKeyInfo>>> {
 
 // ─── Информация об авторизации ────────────────────────────────
 
-final authInfoProvider = NotifierProvider<AuthInfoNotifier, AuthInfo?>(
-  () => AuthInfoNotifier(),
-);
+final authInfoProvider =
+    NotifierProvider<AuthInfoNotifier, LoadState<AuthInfo?>>(
+      () => AuthInfoNotifier(),
+    );
 
-class AuthInfoNotifier extends Notifier<AuthInfo?> {
+class AuthInfoNotifier extends Notifier<LoadState<AuthInfo?>> {
   @override
-  AuthInfo? build() => null;
+  LoadState<AuthInfo?> build() => const LoadState.idle(null);
 
-  Future<void> load({bool failOnError = false}) async {
+  Future<AuthInfo?> load({bool failOnError = false}) async {
+    state = LoadState.loading(state.data);
     try {
       final api = ref.read(apiProvider);
       final res = await api.getAuthMe();
-      state = AuthInfo.fromApi(res.data);
+      final authInfo = AuthInfo.fromApi(res.data);
+      state = LoadState.data(authInfo);
+      return authInfo;
     } catch (e) {
-      debugPrint("Ошибка загрузки auth/me: $e");
+      state = LoadState.error(null, describeLoadError(e));
       if (failOnError) rethrow;
+      return null;
     }
   }
 
-  bool get isAdmin => state?.isAdmin == true;
+  void clear() => state = const LoadState.idle(null);
+
+  void restore(LoadState<AuthInfo?> restoredState) => state = restoredState;
+
+  bool get isAdmin => state.data?.isAdmin == true;
 }
 
 // ─── Геофенс: управление фоновым таском ─────────────────────