修复工作人员端令牌失效后的登录恢复

apps/service_app/test/ui/preflight_page_test.dart

@@ -0,0 +1,77 @@
+// 功能描述：验证作业前检查页面失败重试不会向 setState 返回异步任务。
+// 版本：1.0.0
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:service_app/app/dependencies.dart';
+import 'package:service_app/data/repositories/service_repository.dart';
+import 'package:service_app/data/services/api_client.dart';
+import 'package:service_app/data/services/location_service.dart';
+import 'package:service_app/data/services/secure_session_store.dart';
+import 'package:service_app/domain/models/service_models.dart';
+import 'package:service_app/ui/features/preflight/preflight_page.dart';
+
+/// 提供无需平台插件的空会话存储。
+class _EmptySessionStore implements SessionStore {
+  @override
+  Future<void> delete(String key) async {}
+
+  @override
+  Future<String?> read(String key) async => null;
+
+  @override
+  Future<void> write(String key, String value) async {}
+}
+
+/// 提供不会在重试测试中访问系统定位的占位实现。
+class _UnusedLocationService implements LocationService {
+  @override
+  Future<LocationPoint> current() => throw UnimplementedError();
+}
+
+/// 首次加载失败、第二次成功，用于验证真实重试路径。
+class _FailOnceRepository extends ServiceRepository {
+  _FailOnceRepository()
+    : super(
+        ApiClient(() => '', baseUrl: 'https://api.example.com'),
+        _UnusedLocationService(),
+      );
+
+  int calls = 0;
+
+  @override
+  Future<PreflightResult> preflight() async {
+    calls += 1;
+    if (calls == 1) throw StateError('temporary failure');
+    return const PreflightResult(
+      roleCode: 'delivery',
+      workStatus: 'off_duty',
+      canWork: false,
+      checks: {},
+    );
+  }
+}
+
+/// 点击重新加载后应成功刷新，且测试过程不得出现 Flutter 断言。
+void main() {
+  testWidgets('作业检查失败后可重新加载', (tester) async {
+    final repository = _FailOnceRepository();
+    final session = StaffSession(_EmptySessionStore());
+    await tester.pumpWidget(
+      MaterialApp(
+        home: PreflightPage(session: session, repository: repository),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('作业检查加载失败'), findsOneWidget);
+    expect(repository.calls, 1);
+
+    await tester.tap(find.text('重新加载'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('作业检查加载失败'), findsNothing);
+    expect(find.text('仍有前置条件未完成'), findsOneWidget);
+    expect(repository.calls, 2);
+    expect(tester.takeException(), isNull);
+  });
+}