feat(mobile): login, password change and logout screens

P3 Task 3 移动端（对接 Task 2 api client + 本任务新增的后端契约）：

- 登录页实装：账号/密码表单（空值客户端校验）→ api.login（会话自动
  持久化）→ pushReplacement /home；错误码本地化（AUTH_INVALID_
  CREDENTIALS / AUTH_RATE_LIMITED（含稍后再试文案）/ 网络 / 校验）；
  提交加载态防重复提交。
- 修改密码页（设置页入口）：当前/新/确认三字段，客户端校验（≥8 位、
  两次一致）→ api.changePassword → toast + pop；成功后本地会话不变
  （服务端保留当前会话）；旧密码错误（401 AUTH_INVALID_CREDENTIALS）
  显示「当前密码错误」且不触发 401 驱逐。
- 退出登录：设置页按钮 → api.logout 尽力而为 → 清会话 → 清栈回
  /login；App 壳 initState 注册 onUnauthorized（业务 401 → 清栈 /login），
  根 navigatorKey 接线；password-change 的 401 豁免会话驱逐（拦截器
  豁免集合与令牌附加分离）。
- l10n：新增 16 组 zh/en 文案；错误码 → 文案解析扩展
  （core/error_l10n.dart，errorCode→AppLocalizations）。
- 测试：ApiClient.changePassword 单测 ×2（Bearer+请求体；旧密码 401
  不驱逐）；widget 测试 ×12（登录 5：空值/成功跳转/凭据错误/限速文案/
  加载禁用；改密 4：过短/不一致/旧密码错误文案+会话保留/成功 toast+pop
  且令牌不变；设置 2：改密入口跳转/登出清会话回登录；App 壳 1：401
  清栈回 /login）。flutter analyze 0 issue；flutter test 81/81。

Co-Authored-By: Claude Code <noreply@anthropic.com>

apps/mobile/test/app/app_shell_test.dart

@@ -0,0 +1,57 @@
+/// App 壳 401 接线测试（P3 计划 Task 3）。
+///
+/// 覆盖：业务端点 401 → ApiClient 清会话并触发 onUnauthorized →
+/// 根导航清栈回 /login（PhotoLiveApp.initState 注册的回调）。
+library;
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:photo_live/app/app.dart';
+import 'package:photo_live/core/api_client.dart';
+import 'package:photo_live/core/error_codes.dart';
+import 'package:photo_live/core/session_store.dart';
+import 'package:photo_live/pages/login_page.dart';
+
+import '../helpers/fakes.dart';
+
+void main() {
+  testWidgets('业务 401 → onUnauthorized 清栈回 /login', (tester) async {
+    final store = FakeSessionStore();
+    store.session = Session(
+      token: 'tok-live-1',
+      expiresAt: DateTime.utc(2099, 1, 1),
+      account: 'staff01',
+    );
+    final adapter = FakeAdapter(
+      (o) => (401, errorBody(ErrorCodes.authTokenExpired)),
+    );
+    final client = ApiClient(
+      sessionStore: store,
+      dio: Dio(BaseOptions(baseUrl: 'http://test.local'))
+        ..httpClientAdapter = adapter,
+    );
+
+    // PhotoLiveApp.initState 读取被 override 的客户端并注册 onUnauthorized。
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [apiClientProvider.overrideWith((ref) => client)],
+        child: const PhotoLiveApp(),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    // 先抵 /home 再触发 401：验证清栈（回 /login 而非叠加路由）。
+    rootNavigatorKey.currentState!
+        .pushNamedAndRemoveUntil('/home', (route) => false);
+    await tester.pumpAndSettle();
+
+    // 触发 401 但不在测试体内 await（fake-async 下时钟由 pump 推进，
+    // 阻塞等待会死锁）；AppException 由 ignore 吞掉，断言在下方。
+    client.listAlbums().ignore();
+    await tester.pumpAndSettle();
+
+    expect(store.session, isNull, reason: '业务 401 清空本地会话');
+    expect(find.byType(LoginPage), findsOneWidget, reason: '清栈回登录页');
+  });
+}

apps/mobile/test/core/api_client_test.dart

@@ -509,4 +509,49 @@ void main() {
     expect(adapter.requests[1].method, 'DELETE');
     expect(adapter.requests[1].path, '/v1/photos/pho-1');
   });
+
+  test('changePassword：携带 Bearer 与双密码体；204 成功不动本地会话', () async {
+    seedSession();
+    final adapter = FakeAdapter((o) => (204, null));
+
+    await wired(adapter).changePassword('old-pass-1', 'brand-new-9');
+
+    final req = adapter.requests.single;
+    expect(req.method, 'POST');
+    expect(req.path, '/v1/auth/password-change');
+    expect(req.headers['Authorization'], 'Bearer tok-live-1');
+    expect(req.body, {'oldPassword': 'old-pass-1', 'newPassword': 'brand-new-9'});
+    expect(store.session?.token, 'tok-live-1', reason: '当前会话保留');
+    expect(unauthorizedCalls, 0);
+  });
+
+  test('changePassword：旧密码错误（401 AUTH_INVALID_CREDENTIALS）→ 不驱逐会话不通知',
+      () async {
+    seedSession();
+    final adapter = FakeAdapter(
+      (o) => (
+        401,
+        {
+          'code': 'AUTH_INVALID_CREDENTIALS',
+          'message': 'old password wrong',
+          'requestId': 'req-pc',
+        }
+      ),
+    );
+
+    final err = await captureError(
+      () => wired(adapter).changePassword('wrong-old', 'brand-new-9'),
+    );
+
+    expect(
+      err,
+      isA<AppException>().having(
+        (e) => e.code,
+        'code',
+        ErrorCodes.authInvalidCredentials,
+      ),
+    );
+    expect(store.session?.token, 'tok-live-1', reason: '旧密码错误不清会话');
+    expect(unauthorizedCalls, 0, reason: 'password-change 401 不驱逐');
+  });
 }

apps/mobile/test/helpers/fakes.dart

@@ -0,0 +1,100 @@
+/// Widget/单元测试共用替身（P3 计划 Task 3）。
+///
+/// 与 test/core/api_client_test.dart 中的手写打桩同款：FakeAdapter 为
+/// dio HttpClientAdapter，按路由分发预设响应并记录全部请求；未引入
+/// http_mock_adapter（零额外 dev 依赖，打桩面完全可控）。
+library;
+
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:dio/dio.dart';
+import 'package:photo_live/core/session_store.dart';
+
+/// 内存会话存储（测试替身）。
+class FakeSessionStore implements SessionStore {
+  Session? session;
+
+  @override
+  Future<Session?> read() async => session;
+
+  @override
+  Future<void> save(Session value) async => session = value;
+
+  @override
+  Future<void> clear() async => session = null;
+}
+
+/// 记录到适配器的请求快照。
+class RecordedRequest {
+  const RecordedRequest({
+    required this.method,
+    required this.path,
+    required this.headers,
+    required this.body,
+  });
+
+  final String method;
+  final String path;
+  final Map<String, dynamic> headers;
+  final Object? body;
+}
+
+/// 手写 dio 打桩适配器：按路由分发预设响应并记录全部请求。
+///
+/// [router] 返回 `(status, body)`（可为 async 以模拟慢响应/加载态）；
+/// body 为 null 表示无响应体（204）。
+class FakeAdapter implements HttpClientAdapter {
+  FakeAdapter(this.router);
+
+  final FutureOr<(int, Object?)> Function(RequestOptions options) router;
+
+  final List<RecordedRequest> requests = <RecordedRequest>[];
+
+  @override
+  Future<ResponseBody> fetch(
+    RequestOptions options,
+    Stream? requestStream,
+    Future? cancelFuture,
+  ) async {
+    requests.add(
+      RecordedRequest(
+        method: options.method,
+        path: options.path,
+        headers: Map<String, dynamic>.from(options.headers),
+        body: options.data,
+      ),
+    );
+    final (status, body) = await router(options);
+    if (body == null) {
+      // 204 等：空体且不带 JSON content-type（transformer 不解码）。
+      return ResponseBody.fromString('', status);
+    }
+    return ResponseBody.fromString(
+      jsonEncode(body),
+      status,
+      headers: {
+        Headers.contentTypeHeader: [Headers.jsonContentType],
+      },
+    );
+  }
+
+  @override
+  void close({bool force = false}) {}
+}
+
+/// 常用响应体：登录成功（openapi LoginResponse 形状）。
+Map<String, dynamic> loginOkBody({
+  String token = 'tok-new',
+  String expiresAt = '2026-09-20T12:00:00Z',
+}) => <String, dynamic>{
+        'sessionToken': token,
+        'expiresAt': expiresAt,
+      };
+
+/// 常用响应体：契约 Error 形状。
+Map<String, dynamic> errorBody(String code) => <String, dynamic>{
+        'code': code,
+        'message': 'stub message',
+        'requestId': 'req-stub',
+      };

apps/mobile/test/pages/login_page_test.dart

@@ -0,0 +1,155 @@
+/// 登录页 widget 测试（P3 计划 Task 3）。
+///
+/// 覆盖：空字段客户端校验（不发请求）、成功登录写会话并跳 /home、
+/// 凭据错误/限速（429）错误码本地化文案、提交中加载态（按钮禁用防重复提交）。
+/// API 层经 FakeAdapter（dio HttpClientAdapter）打桩，Provider 以 override
+/// 注入测试客户端（无真实网络）。
+library;
+
+import 'dart:async';
+
+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:photo_live/core/api_client.dart';
+import 'package:photo_live/core/error_codes.dart';
+import 'package:photo_live/l10n/app_localizations.dart';
+import 'package:photo_live/pages/login_page.dart';
+
+import '../helpers/fakes.dart';
+
+void main() {
+  late FakeSessionStore store;
+  late int unauthorizedCalls;
+
+  setUp(() {
+    store = FakeSessionStore();
+    unauthorizedCalls = 0;
+  });
+
+  ApiClient clientOf(FakeAdapter adapter) => ApiClient(
+        sessionStore: store,
+        dio: Dio(BaseOptions(baseUrl: 'http://test.local'))
+          ..httpClientAdapter = adapter,
+      )..onUnauthorized = () => unauthorizedCalls++;
+
+  Future<void> pumpLoginPage(WidgetTester tester, ApiClient client) async {
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [apiClientProvider.overrideWith((ref) => client)],
+        child: MaterialApp(
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: const LoginPage(),
+          routes: {
+            '/home': (context) =>
+                const Scaffold(body: Center(child: Text('HOME_MARK'))),
+          },
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+  }
+
+  Future<void> fillAndSubmit(WidgetTester tester) async {
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Account'),
+      'staff01',
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Password'),
+      'pw-123456',
+    );
+    await tester.tap(find.text('Sign in'));
+    await tester.pump(); // 触发提交（含 SnackBar 动画首帧）。
+  }
+
+  testWidgets('空字段 → 客户端校验提示，不发请求', (tester) async {
+    final adapter = FakeAdapter((_) => throw StateError('不应发起请求'));
+    await pumpLoginPage(tester, clientOf(adapter));
+
+    await tester.tap(find.text('Sign in'));
+    await tester.pump();
+
+    // 测试环境默认 locale=en：账号/密码两个必填提示。
+    expect(find.text('This field is required'), findsNWidgets(2));
+    expect(adapter.requests, isEmpty);
+  });
+
+  testWidgets('成功 → 写会话并跳 /home', (tester) async {
+    final adapter = FakeAdapter(
+      (o) => o.path == '/v1/auth/password' ? (200, loginOkBody())
+          : throw StateError('unexpected ${o.path}'),
+    );
+    await pumpLoginPage(tester, clientOf(adapter));
+
+    await fillAndSubmit(tester);
+    await tester.pumpAndSettle();
+
+    expect(find.text('HOME_MARK'), findsOneWidget);
+    expect(store.session?.token, 'tok-new');
+    expect(store.session?.account, 'staff01');
+    expect(
+      adapter.requests.single.body,
+      {'account': 'staff01', 'password': 'pw-123456'},
+    );
+  });
+
+  testWidgets('凭据错误（401）→ 「账号或密码错误」文案，不驱逐通知', (tester) async {
+    final adapter = FakeAdapter(
+      (o) => o.path == '/v1/auth/password'
+          ? (401, errorBody(ErrorCodes.authInvalidCredentials))
+          : throw StateError('unexpected ${o.path}'),
+    );
+    await pumpLoginPage(tester, clientOf(adapter));
+
+    await fillAndSubmit(tester);
+    await tester.pumpAndSettle();
+
+    expect(find.text('Incorrect account or password'), findsOneWidget);
+    expect(store.session, isNull, reason: '登录失败不落会话');
+    expect(unauthorizedCalls, 0, reason: '登录 401 不触发驱逐');
+    expect(find.text('HOME_MARK'), findsNothing);
+  });
+
+  testWidgets('限速（429 AUTH_RATE_LIMITED）→ 稍后再试文案', (tester) async {
+    final adapter = FakeAdapter(
+      (o) => o.path == '/v1/auth/password'
+          ? (429, errorBody(ErrorCodes.authRateLimited))
+          : throw StateError('unexpected ${o.path}'),
+    );
+    await pumpLoginPage(tester, clientOf(adapter));
+
+    await fillAndSubmit(tester);
+    await tester.pumpAndSettle();
+
+    expect(
+      find.text('Too many attempts. Please try again later'),
+      findsOneWidget,
+    );
+  });
+
+  testWidgets('提交中 → 加载指示且按钮禁用（防重复提交）', (tester) async {
+    final gate = Completer<void>();
+    final adapter = FakeAdapter((o) async {
+      await gate.future;
+      return (200, loginOkBody());
+    });
+    await pumpLoginPage(tester, clientOf(adapter));
+
+    await fillAndSubmit(tester);
+    // dio 链路经真实定时器推进（fake-async 需步进时钟才抵达适配器）。
+    await tester.pump(const Duration(milliseconds: 50));
+
+    expect(find.byType(CircularProgressIndicator), findsOneWidget);
+    // 加载中再点按钮（onPressed=null）不产生第二个请求。
+    await tester.tap(find.byType(FilledButton), warnIfMissed: false);
+    await tester.pump(const Duration(milliseconds: 50));
+    expect(adapter.requests, hasLength(1));
+
+    gate.complete();
+    await tester.pumpAndSettle();
+    expect(find.text('HOME_MARK'), findsOneWidget);
+  });
+}

apps/mobile/test/pages/password_change_page_test.dart

@@ -0,0 +1,164 @@
+/// 修改密码页 widget 测试（P3 计划 Task 3）。
+///
+/// 覆盖：客户端校验（新密码 ≥8、两次一致；不发请求）、旧密码错误
+/// （401 AUTH_INVALID_CREDENTIALS）→「当前密码错误」文案且本地会话保留
+/// （password-change 的 401 不驱逐）、成功 → toast + pop 回上级且
+/// 会话令牌不变（服务端保留当前会话语义）。
+library;
+
+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:photo_live/core/api_client.dart';
+import 'package:photo_live/core/error_codes.dart';
+import 'package:photo_live/core/session_store.dart';
+import 'package:photo_live/l10n/app_localizations.dart';
+import 'package:photo_live/pages/password_change_page.dart';
+
+import '../helpers/fakes.dart';
+
+void main() {
+  late FakeSessionStore store;
+  late int unauthorizedCalls;
+
+  setUp(() {
+    store = FakeSessionStore();
+    unauthorizedCalls = 0;
+  });
+
+  ApiClient clientOf(FakeAdapter adapter) => ApiClient(
+        sessionStore: store,
+        dio: Dio(BaseOptions(baseUrl: 'http://test.local'))
+          ..httpClientAdapter = adapter,
+      )..onUnauthorized = () => unauthorizedCalls++;
+
+  void seedSession() {
+    store.session = Session(
+      token: 'tok-live-1',
+      expiresAt: DateTime.utc(2099, 1, 1),
+      account: 'staff01',
+    );
+  }
+
+  Future<void> pumpOverMarker(WidgetTester tester, ApiClient client) async {
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [apiClientProvider.overrideWith((ref) => client)],
+        child: MaterialApp(
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: const Scaffold(body: Center(child: Text('MARK'))),
+          routes: {
+            '/password-change': (context) => const PasswordChangePage(),
+          },
+        ),
+      ),
+    );
+    tester.state<NavigatorState>(find.byType(Navigator).first)
+        .pushNamed('/password-change');
+    await tester.pumpAndSettle();
+  }
+
+  Future<void> fill(
+    WidgetTester tester, {
+    String oldPw = 'old-pass-123',
+    String newPw = 'brand-new-pass-9',
+    String confirmPw = 'brand-new-pass-9',
+  }) async {
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Current password'),
+      oldPw,
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'New password'),
+      newPw,
+    );
+    await tester.enterText(
+      find.widgetWithText(TextFormField, 'Confirm new password'),
+      confirmPw,
+    );
+  }
+
+  testWidgets('新密码过短 → 客户端校验提示，不发请求', (tester) async {
+    seedSession();
+    final adapter = FakeAdapter((_) => throw StateError('不应发起请求'));
+    await pumpOverMarker(tester, clientOf(adapter));
+
+    await fill(tester, newPw: 'short7', confirmPw: 'short7');
+    await tester.tap(find.widgetWithText(FilledButton, 'Change password'));
+    await tester.pump();
+
+    expect(
+      find.text('New password must be at least 8 characters'),
+      findsOneWidget,
+    );
+    expect(adapter.requests, isEmpty);
+  });
+
+  testWidgets('两次新密码不一致 → 校验提示，不发请求', (tester) async {
+    seedSession();
+    final adapter = FakeAdapter((_) => throw StateError('不应发起请求'));
+    await pumpOverMarker(tester, clientOf(adapter));
+
+    await fill(tester, confirmPw: 'different-pass-9');
+    await tester.tap(find.widgetWithText(FilledButton, 'Change password'));
+    await tester.pump();
+
+    expect(
+      find.text('New passwords do not match'),
+      findsOneWidget,
+    );
+    expect(adapter.requests, isEmpty);
+  });
+
+  testWidgets('旧密码错误（401）→ 「当前密码错误」文案，会话保留不驱逐', (tester) async {
+    seedSession();
+    final adapter = FakeAdapter(
+      (o) => o.path == '/v1/auth/password-change'
+          ? (401, errorBody(ErrorCodes.authInvalidCredentials))
+          : throw StateError('unexpected ${o.path}'),
+    );
+    await pumpOverMarker(tester, clientOf(adapter));
+
+    await fill(tester);
+    await tester.tap(find.widgetWithText(FilledButton, 'Change password'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Current password is incorrect'), findsOneWidget);
+    expect(store.session?.token, 'tok-live-1', reason: '旧密码错误不清会话');
+    expect(unauthorizedCalls, 0, reason: 'password-change 的 401 不驱逐');
+    expect(find.text('MARK'), findsNothing, reason: '停留在修改密码页');
+  });
+
+  testWidgets('成功 → toast + pop 回上级；会话令牌不变（当前会话保留）', (tester) async {
+    seedSession();
+    final adapter = FakeAdapter(
+      (o) => o.path == '/v1/auth/password-change'
+          ? (204, null)
+          : throw StateError('unexpected ${o.path}'),
+    );
+    await pumpOverMarker(tester, clientOf(adapter));
+
+    await fill(tester);
+    await tester.tap(find.widgetWithText(FilledButton, 'Change password'));
+    await tester.pumpAndSettle();
+
+    final req = adapter.requests.single;
+    expect(req.method, 'POST');
+    expect(req.path, '/v1/auth/password-change');
+    expect(req.headers['Authorization'], 'Bearer tok-live-1');
+    expect(req.body, {
+      'oldPassword': 'old-pass-123',
+      'newPassword': 'brand-new-pass-9',
+    });
+
+    expect(find.text('Password changed'), findsOneWidget);
+    expect(find.text('MARK'), findsOneWidget, reason: '成功后 pop 回上级');
+    expect(
+      store.session?.token,
+      'tok-live-1',
+      reason: '服务端保留当前会话：本地令牌无需变更',
+    );
+  });
+}

apps/mobile/test/pages/settings_tab_test.dart

@@ -0,0 +1,88 @@
+/// 设置页 widget 测试（P3 计划 Task 3）。
+///
+/// 覆盖：修改密码入口跳 /password-change；退出登录 → 调 api.logout
+/// （尽力而为）→ 清空本地会话 → 清栈回 /login。
+library;
+
+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:photo_live/core/api_client.dart';
+import 'package:photo_live/core/session_store.dart';
+import 'package:photo_live/l10n/app_localizations.dart';
+import 'package:photo_live/pages/home_page.dart';
+import 'package:photo_live/pages/login_page.dart';
+import 'package:photo_live/pages/password_change_page.dart';
+
+import '../helpers/fakes.dart';
+
+void main() {
+  late FakeSessionStore store;
+
+  setUp(() {
+    store = FakeSessionStore();
+    store.session = Session(
+      token: 'tok-live-1',
+      expiresAt: DateTime.utc(2099, 1, 1),
+      account: 'staff01',
+    );
+  });
+
+  ApiClient clientOf(FakeAdapter adapter) => ApiClient(
+        sessionStore: store,
+        dio: Dio(BaseOptions(baseUrl: 'http://test.local'))
+          ..httpClientAdapter = adapter,
+      );
+
+  Future<void> pumpHome(WidgetTester tester, ApiClient client) async {
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [apiClientProvider.overrideWith((ref) => client)],
+        child: MaterialApp(
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: const HomePage(),
+          routes: {
+            '/login': (context) => const LoginPage(),
+            '/password-change': (context) => const PasswordChangePage(),
+          },
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+    // 切到设置 tab（底部导航第三项）。
+    await tester.tap(find.byIcon(Icons.settings_outlined));
+    await tester.pumpAndSettle();
+  }
+
+  testWidgets('修改密码入口 → 跳 /password-change', (tester) async {
+    final adapter = FakeAdapter((_) => throw StateError('不应发起请求'));
+    await pumpHome(tester, clientOf(adapter));
+
+    await tester.tap(find.text('Change password'));
+    await tester.pumpAndSettle();
+
+    expect(find.byType(PasswordChangePage), findsOneWidget);
+  });
+
+  testWidgets('退出登录 → api.logout + 清会话 + 清栈回 /login（服务端失败亦然）',
+      (tester) async {
+    // 服务端撤销失败（500）也照样本地登出——尽力而为语义。
+    final adapter = FakeAdapter(
+      (o) => o.path == '/v1/auth/logout'
+          ? (500, errorBody('INTERNAL_ERROR'))
+          : throw StateError('unexpected ${o.path}'),
+    );
+    await pumpHome(tester, clientOf(adapter));
+
+    await tester.tap(find.text('Sign out'));
+    await tester.pumpAndSettle();
+
+    expect(adapter.requests.single.path, '/v1/auth/logout');
+    expect(adapter.requests.single.method, 'POST');
+    expect(store.session, isNull, reason: '本地会话必须清除');
+    expect(find.byType(LoginPage), findsOneWidget);
+    expect(find.byType(HomePage), findsNothing, reason: '主壳已出栈');
+  });
+}