feat(media): 图片占位改为纯色块并去掉扫光

lib/pages/recommend/widgets/home_hero_carousel.dart

@@ -187,7 +187,6 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
         RemoteImage(
           banner.imageUrl,
           fit: BoxFit.cover,
-          showFallbackIcon: true,
           fallbackColor: AppColors.contentSurface,
         ),
         const DecoratedBox(
@@ -210,10 +209,7 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
             left: 28,
             right: 28,
             bottom: _copyBottomInset,
-            child: _HeroCopy(
-              key: Key('home-hero-copy-$index'),
-              drama: drama,
-            ),
+            child: _HeroCopy(key: Key('home-hero-copy-$index'), drama: drama),
           ),
         if (drama != null)
           Positioned.fill(

lib/pages/recommend/widgets/home_recommend_content.dart

@@ -97,7 +97,6 @@ class HomePosterCard extends StatelessWidget {
                   RemoteImage(
                     drama.posterUrl,
                     fit: BoxFit.cover,
-                    showFallbackIcon: true,
                     fallbackColor: AppColors.contentSurface,
                   ),
                   if (tagLabel.isNotEmpty)
@@ -189,7 +188,6 @@ class HomeEditorPickBanner extends StatelessWidget {
               RemoteImage(
                 drama.posterUrl,
                 fit: BoxFit.cover,
-                showFallbackIcon: true,
                 fallbackColor: AppColors.contentSurface,
               ),
               const DecoratedBox(

lib/pages/recommend/widgets/playlist_detail_page.dart

@@ -310,7 +310,6 @@ class _PlaylistCollage extends StatelessWidget {
       child: RemoteImage(
         drama.posterUrl,
         fit: BoxFit.cover,
-        showFallbackIcon: true,
         fallbackColor: _filmBody,
       ),
     );

lib/pages/recommend/widgets/recommend_section_card.dart

@@ -25,7 +25,9 @@ class RecommendSectionCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final tagLabel = drama.localizedTag(Localizations.localeOf(context).languageCode);
+    final tagLabel = drama.localizedTag(
+      Localizations.localeOf(context).languageCode,
+    );
     return SizedBox(
       width: AppDimens.recommendCardWidth,
       child: InkWell(
@@ -47,7 +49,6 @@ class RecommendSectionCard extends StatelessWidget {
                     RemoteImage(
                       drama.posterUrl,
                       fit: BoxFit.cover,
-                      showFallbackIcon: true,
                       fallbackColor: AppColors.contentSurface,
                     ),
                     if (tagLabel.isNotEmpty)
@@ -80,7 +81,9 @@ class RecommendSectionCard extends StatelessWidget {
             ),
             const SizedBox(height: AppDimens.cardCoverTitleGap),
             Text(
-              drama.localizedTitle(Localizations.localeOf(context).languageCode),
+              drama.localizedTitle(
+                Localizations.localeOf(context).languageCode,
+              ),
               key: Key('recommend-title-$sectionKey-${drama.id}'),
               maxLines: 2,
               overflow: TextOverflow.ellipsis,
@@ -116,7 +119,9 @@ class RecommendSectionCard extends StatelessWidget {
   }
 
   List<String> _cardTags(BuildContext context) {
-    final localized = drama.localizedTypeLabels(Localizations.localeOf(context).languageCode);
+    final localized = drama.localizedTypeLabels(
+      Localizations.localeOf(context).languageCode,
+    );
     if (localized.isNotEmpty) return localized.take(3).toList(growable: false);
     final seen = <String>{};
     return [drama.genre, drama.category]