feat(flutter): 优化浅色开屏与原生过渡

test/splash/splash_gate_test.dart

@@ -9,6 +9,7 @@ import 'package:fruitshorts/core/data/models/drama.dart';
 import 'package:fruitshorts/core/data/models/home_feed.dart';
 import 'package:fruitshorts/core/data/repositories/catalog_repository.dart';
 import 'package:fruitshorts/core/data/services/catalog_controller.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/l10n/app_localizations.dart';
 import 'package:fruitshorts/pages/home/home_view.dart';
 import 'package:fruitshorts/pages/splash/splash_page.dart';
@@ -68,16 +69,24 @@ void main() {
     final glowGradient = (glow.decoration as BoxDecoration).gradient;
     expect(
       (glowGradient as RadialGradient).colors.first,
-      const Color(0x40FF7A1A),
+      const Color(0x33FF7A1A),
     );
     expect(
       tester.widget<ColoredBox>(find.byKey(const Key('splash-screen'))).color,
-      const Color(0xFF100C0A),
+      AppColors.ink,
+    );
+    expect(
+      tester.widget<Text>(find.byKey(const Key('splash-brand'))).style?.color,
+      AppColors.onSurface,
+    );
+    expect(
+      tester.widget<Text>(find.byKey(const Key('splash-tagline'))).style?.color,
+      AppColors.muted,
     );
     final overlay = tester.widget<AnnotatedRegion<SystemUiOverlayStyle>>(
       find.byType(AnnotatedRegion<SystemUiOverlayStyle>).first,
     );
-    expect(overlay.value.statusBarIconBrightness, Brightness.light);
+    expect(overlay.value.statusBarIconBrightness, Brightness.dark);
 
     await tester.pump(const Duration(milliseconds: 1200));