style(home): 匹配观看全集设计稿配色

lib/pages/player/widgets/home_feed_recommend_panel.dart

@@ -35,13 +35,8 @@ const _metadataStrutStyle = StrutStyle(
 const double _watchAllInset = 12;
 const double _watchAllRadius = 6;
 const double _watchAllFont = 16;
-const _watchAllGradient = LinearGradient(
-  begin: Alignment.centerLeft,
-  end: Alignment.centerRight,
-  colors: [AppColors.mineStatShade, AppColors.brandRed, AppColors.vipButtonEnd],
-);
 
-/// 「观看完整剧集」渐变按钮高度，overlay 用它安排底部避让。
+/// 「观看完整剧集」按钮高度，overlay 用它安排底部避让。
 const double homeFeedWatchAllHeight = _watchAllHeight;
 
 /// 播放量紧凑展示（跟随语言）：zh 20万 / en 200K / id 200 rb。
@@ -212,8 +207,8 @@ class HomeFeedWatchAllBar extends StatelessWidget {
     return ClipRRect(
       borderRadius: BorderRadius.circular(_watchAllRadius),
       child: DecoratedBox(
-        key: const Key('home-feed-full-series-gradient'),
-        decoration: const BoxDecoration(gradient: _watchAllGradient),
+        key: const Key('home-feed-full-series-surface'),
+        decoration: const BoxDecoration(color: AppColors.watchAllSurface),
         child: Material(
           key: const Key('home-feed-full-series-bg'),
           color: AppColors.transparent,