fix(flutter): 修复首页冷启动灰屏

lib/core/widgets/remote_image.dart

@@ -16,6 +16,7 @@ class RemoteImage extends StatelessWidget {
     this.showFallbackIcon = false,
     this.fallbackIconKey,
     this.fallbackAspectRatio,
+    this.fallbackColor = AppColors.bar,
   });
 
   final String path;
@@ -25,6 +26,7 @@ class RemoteImage extends StatelessWidget {
   final bool showFallbackIcon;
   final Key? fallbackIconKey;
   final double? fallbackAspectRatio;
+  final Color fallbackColor;
 
   @override
   Widget build(BuildContext context) {
@@ -47,7 +49,7 @@ class RemoteImage extends StatelessWidget {
     final fallback = Container(
       width: width,
       height: height,
-      color: AppColors.bar,
+      color: fallbackColor,
       alignment: Alignment.center,
       child: showFallbackIcon
           ? Icon(

lib/pages/player/player_view.dart

@@ -300,6 +300,11 @@ class _PlayerPageState extends State<PlayerPage> with WidgetsBindingObserver {
     return Stack(
       fit: StackFit.expand,
       children: [
+        if (widget.homeMode)
+          const ColoredBox(
+            key: Key('home-feed-black-background'),
+            color: Colors.black,
+          ),
         if (!ready) _PlayerFallbackBackground(posterUrl: drama.posterUrl),
         ?video,
         if (widget.homeMode && _chromeVisible && !logic.chromeHidden)
@@ -580,10 +585,11 @@ class _PlayerFallbackBackground extends StatelessWidget {
           posterUrl,
           key: const Key('player-fallback-cover'),
           fit: BoxFit.cover,
+          fallbackColor: Colors.black,
         ),
         const ColoredBox(
           key: Key('player-fallback-scrim'),
-          color: Color(0x66000000),
+          color: Color(0x4D000000),
         ),
       ],
     );

test/home/k28_a_navigation_test.dart

@@ -59,6 +59,7 @@ void main() {
 
     expect(find.byKey(const Key('home-feed-title')), findsOneWidget);
     expect(find.byKey(const Key('home-feed-full-series')), findsOneWidget);
+    expect(find.byKey(const Key('home-feed-black-background')), findsOneWidget);
     expect(find.byType(PageView), findsOneWidget);
     expect(find.byKey(const Key('home-browse-page')), findsNothing);
     expect(

test/player/player_fullscreen_test.dart

@@ -13,6 +13,7 @@ import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
 import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
 import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart';
 import 'package:fruitshorts/core/theme/app_colors.dart';
+import 'package:fruitshorts/core/widgets/remote_image.dart';
 import 'package:fruitshorts/pages/player/widgets/player_center_toggle.dart';
 import 'package:fruitshorts/pages/player/widgets/seek_progress_bar.dart';
 
@@ -333,11 +334,17 @@ void main() {
     final fallback = find.byKey(const Key('player-fallback-background'));
     expect(fallback, findsOneWidget);
     expect(find.byKey(const Key('player-fallback-cover')), findsOneWidget);
+    expect(
+      tester
+          .widget<RemoteImage>(find.byKey(const Key('player-fallback-cover')))
+          .fallbackColor,
+      Colors.black,
+    );
     expect(
       tester
           .widget<ColoredBox>(find.byKey(const Key('player-fallback-scrim')))
           .color,
-      const Color(0x66000000),
+      const Color(0x4D000000),
     );
     expect(
       tester