test(ui): 更新主题导航与布局断言

test/auth/auth_visual_test.dart

@@ -14,7 +14,6 @@ import 'package:fruitshorts/core/data/services/auth_session_store.dart';
 import 'package:fruitshorts/core/platform/haptics.dart';
 import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/core/theme/app_dimens.dart';
-import 'package:fruitshorts/core/theme/app_theme.dart';
 import 'package:fruitshorts/l10n/app_localizations.dart';
 import 'package:fruitshorts/pages/auth/auth_view.dart';
 
@@ -136,7 +135,7 @@ void main() {
         cardDecoration.borderRadius,
         BorderRadius.circular(AppDimens.authCardRadius),
       );
-      expect(cardDecoration.boxShadow, contains(AppTheme.cardShadow));
+      expect(cardDecoration.boxShadow, isNull);
       expect(card.padding, const EdgeInsets.all(20));
 
       final email = tester.widget<TextField>(
@@ -222,7 +221,7 @@ void main() {
             find.descendant(of: back, matching: find.byType(Material)),
           )
           .color,
-      AppColors.card,
+      AppColors.transparent,
     );
   });