fix(player): 修复清晰度切换闪屏与还原黑屏

lib/pages/player/widgets/home_feed_recommend_panel.dart

@@ -10,9 +10,9 @@ import '../../../l10n/app_localizations.dart';
 import '../../home/widgets/home_drama_classification.dart';
 import 'interaction_rail.dart';
 
-const double _seriesFont = 21;
-const double _tagFont = 14;
-const double _synopsisFont = 15;
+const double _seriesFont = 17;
+const double _tagFont = 12;
+const double _synopsisFont = 14;
 const double _watchAllHeight = 44;
 const List<Shadow> _textShadows = [
   Shadow(color: AppColors.shadow, blurRadius: 6, offset: Offset(0, 1)),
@@ -90,7 +90,7 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
                   style: const TextStyle(
                     color: AppColors.textPrimary,
                     fontSize: _seriesFont,
-                    fontWeight: FontWeight.w700,
+                    fontWeight: FontWeight.w400,
                     shadows: _textShadows,
                   ),
                 ),
@@ -98,7 +98,7 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
               const SizedBox(width: 2),
               const Icon(
                 Icons.chevron_right_rounded,
-                size: 20,
+                size: 18,
                 color: AppColors.textPrimary,
               ),
             ],
@@ -127,13 +127,13 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
     ];
     return SizedBox(
       key: const Key('home-feed-tags'),
-      height: 25,
+      height: 22,
       child: ListView.separated(
         scrollDirection: Axis.horizontal,
-        physics: const NeverScrollableScrollPhysics(),
+        physics: const BouncingScrollPhysics(),
         shrinkWrap: true,
         itemCount: chips.length,
-        separatorBuilder: (_, _) => const SizedBox(width: 8),
+        separatorBuilder: (_, _) => const SizedBox(width: 6),
         itemBuilder: (_, index) => chips[index],
       ),
     );
@@ -151,7 +151,15 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
       children: [
         TextSpan(
           text: prefix,
-          style: baseStyle.copyWith(fontWeight: FontWeight.w600),
+          style: baseStyle,
+        ),
+        TextSpan(
+          text: ' | ',
+          style: baseStyle.copyWith(
+            color: AppColors.textPrimary.withValues(alpha: 0.45),
+            fontSize: _synopsisFont - 2,
+            fontWeight: FontWeight.w400,
+          ),
         ),
         TextSpan(text: synopsis, style: baseStyle),
       ],
@@ -164,6 +172,7 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
         final toggle = _synopsisToggle(
           key: const Key('home-feed-synopsis-more'),
           label: l10n.expandSynopsis,
+          padding: const EdgeInsets.only(left: 6),
         );
         final painter = TextPainter(
           text: span,
@@ -180,21 +189,28 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
           );
         }
         // 设计稿：单行省略号 + 行内固定「展开」。
-        return Row(
-          key: const Key('home-feed-synopsis-collapsed'),
-          children: [
-            Expanded(
-              child: Text.rich(
-                span,
-                key: const Key('home-feed-synopsis'),
-                maxLines: 1,
-                overflow: TextOverflow.ellipsis,
-                style: baseStyle,
+        // 整行可点：真机上不必精确命中两个小字，点简介任意位置都能展开。
+        return GestureDetector(
+          behavior: HitTestBehavior.opaque,
+          onTap: () => setState(() => _synopsisExpanded = true),
+          child: Row(
+            key: const Key('home-feed-synopsis-collapsed'),
+            // 顶对齐：文字位置不变，toggle 的 bottom 留白把触控区向下扩到空白处。
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Expanded(
+                child: Text.rich(
+                  span,
+                  key: const Key('home-feed-synopsis'),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: baseStyle,
+                ),
               ),
-            ),
-            const SizedBox(width: 2),
-            toggle,
-          ],
+              const SizedBox(width: 2),
+              toggle,
+            ],
+          ),
         );
       },
     );
@@ -205,38 +221,50 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
     TextStyle style,
     AppLocalizations l10n,
   ) {
-    return Column(
-      key: const Key('home-feed-synopsis-expanded'),
-      crossAxisAlignment: CrossAxisAlignment.start,
+    // 「收起」内联在简介最后一行末尾，避免独占一行导致多行简介与进度条间
+    // 出现大片空白；垂直方向只留少量触控留白（仅撑高最后一行）。
+    final expandedSpan = TextSpan(
+      style: style,
       children: [
-        Text.rich(
-          span,
-          key: const Key('home-feed-synopsis'),
-          style: style,
-        ),
-        const SizedBox(height: 2),
-        Align(
-          alignment: Alignment.centerRight,
+        span,
+        WidgetSpan(
+          alignment: PlaceholderAlignment.baseline,
+          baseline: TextBaseline.alphabetic,
           child: _synopsisToggle(
             key: const Key('home-feed-synopsis-more'),
             label: l10n.showLess,
+            padding: const EdgeInsets.only(left: 8),
           ),
         ),
       ],
     );
+    return Text.rich(
+      expandedSpan,
+      key: const Key('home-feed-synopsis-expanded'),
+    );
   }
 
-  Widget _synopsisToggle({required Key key, required String label}) {
+  Widget _synopsisToggle({
+    required Key key,
+    required String label,
+    required EdgeInsets padding,
+  }) {
     return GestureDetector(
       key: key,
+      // opaque + 留白扩大命中区；留白方向由调用方决定，
+      // 展开态不能加 top padding，否则「收起」距简介正文过远。
+      behavior: HitTestBehavior.opaque,
       onTap: () => setState(() => _synopsisExpanded = !_synopsisExpanded),
-      child: Text(
-        label,
-        style: const TextStyle(
-          color: AppColors.textPrimary,
-          fontSize: _synopsisFont,
-          fontWeight: FontWeight.w600,
-          shadows: _textShadows,
+      child: Padding(
+        padding: padding,
+        child: Text(
+          label,
+          style: const TextStyle(
+            color: AppColors.textPrimary,
+            fontSize: _synopsisFont,
+            fontWeight: FontWeight.w600,
+            shadows: _textShadows,
+          ),
         ),
       ),
     );
@@ -317,7 +345,7 @@ class _TagChip extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Container(
-      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 2),
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
       alignment: Alignment.center,
       decoration: BoxDecoration(
         color: filled
@@ -426,11 +454,11 @@ class HomeFeedActionRail extends StatelessWidget {
   Widget build(BuildContext context) {
     final l10n = AppLocalizations.of(context)!;
     return InteractionRail(
-      itemGap: 18,
+      itemGap: 12,
       buttonSize: 48,
       iconSize: 36,
       countFontSize: 15,
-      iconCountGap: 6,
+      iconCountGap: 2,
       items: [
         InteractionRailItem(
           key: const Key('rail-save'),
@@ -462,8 +490,7 @@ class HomeFeedActionRail extends StatelessWidget {
         ),
         InteractionRailItem(
           key: const Key('rail-share'),
-          icon: Icons.reply_rounded,
-          mirrorIcon: true,
+          asset: 'assets/icon/rail/rail_share.png',
           label: l10n.share,
           countKey: const Key('rail-share-label'),
           onTap: onShare,