feat(client): 授权管理独立一级屏——授权/购买续费/订单管理三 tab（桌面+移动）

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

client/test/golden/license_golden_test.dart

@@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:jiu_client/core/auth/auth_state.dart';
+import 'package:jiu_client/core/utils/clock.dart';
+import 'package:jiu_client/providers/license_provider.dart';
+import 'package:jiu_client/screens/license/license_screen.dart';
+
+import '../support/shell_harness.dart';
+
+/// 授权管理独立一级屏 golden × 三主题（回归闸 + 保真基准），照原型
+/// design/prototype/screens/license.html：默认落「授权信息」tab（与原型截图
+/// 默认态一致），三 tab 均可见（admin + 非 iOS）。到期日照抄 about/settings
+/// 现有 golden 基准 2027-03-15，appClock 冻结 2026-07-13 09:30:15。
+///   node tools/fidelity.mjs license
+/// 窄屏另见 license_mobile_golden_test.dart。
+/// 更新基准：flutter test --update-goldens test/golden/license_golden_test.dart
+
+class _FakeLicenseActive extends LicenseNotifier {
+  @override
+  Future<LicenseInfo?> build() async => LicenseInfo(
+        id: 1,
+        type: 'annual',
+        isActive: true,
+        maxDevices: 3,
+        phase: 'normal',
+        expiresAt: DateTime(2027, 3, 15),
+      );
+}
+
+List<Override> _overrides() => [
+      licenseProvider.overrideWith(() => _FakeLicenseActive()),
+      isReadonlyProvider.overrideWithValue(false),
+    ];
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  SharedPreferences.setMockInitialValues({});
+  appClock = () => DateTime(2026, 7, 13, 9, 30, 15);
+
+  shellGoldenAcrossThemes(
+    'license 授权信息 tab 整框(桌面)',
+    path: '/license',
+    screen: (_) => const LicenseScreen(),
+    goldenPrefix: 'license',
+    overrides: _overrides,
+    logical: const Size(1280, 900),
+  );
+}

client/test/golden/license_mobile_golden_test.dart

@@ -0,0 +1,62 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:jiu_client/core/auth/auth_state.dart';
+import 'package:jiu_client/core/utils/clock.dart';
+import 'package:jiu_client/providers/license_provider.dart';
+import 'package:jiu_client/screens/license/license_screen.dart';
+
+import '../support/golden_harness.dart';
+
+/// 授权管理独立一级屏窄屏 golden × 三主题（390×844 @2x），对齐原型
+/// m-license.html：通栏 DsSeg 三 tab + 默认「授权信息」tab 内容。
+/// 更新基准：flutter test --update-goldens test/golden/license_mobile_golden_test.dart
+
+class _FakeAuth extends AuthNotifier {
+  _FakeAuth() {
+    state = const AuthState(
+      user: AuthUser(
+          accessToken: 't',
+          refreshToken: 'r',
+          id: 1,
+          username: 'wang',
+          realName: '王经理',
+          shopNo: 'DSJH-001',
+          shopId: 1,
+          role: 'admin'),
+    );
+  }
+}
+
+class _FakeLicenseActive extends LicenseNotifier {
+  @override
+  Future<LicenseInfo?> build() async => LicenseInfo(
+        id: 1,
+        type: 'annual',
+        isActive: true,
+        maxDevices: 3,
+        phase: 'normal',
+        expiresAt: DateTime(2027, 3, 15),
+      );
+}
+
+List<Override> _overrides() => [
+      authStateProvider.overrideWith((ref) => _FakeAuth()),
+      licenseProvider.overrideWith(() => _FakeLicenseActive()),
+      isReadonlyProvider.overrideWithValue(false),
+    ];
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  SharedPreferences.setMockInitialValues({});
+  appClock = () => DateTime(2026, 7, 13, 9, 30, 15);
+
+  goldenAcrossThemes(
+    'license 授权信息 tab 整屏(移动)',
+    goldenPrefix: 'license_mobile',
+    child: () => const Scaffold(body: LicenseScreen()),
+    overrides: _overrides,
+    logical: const Size(390, 844),
+  );
+}