feat(player): 右侧互动栏图标按参考图替换并放大

lib/pages/player/widgets/home_feed_overlay.dart

@@ -173,7 +173,7 @@ class _HomeFeedOverlayState extends State<HomeFeedOverlay> {
       items: [
         InteractionRailItem(
           key: const Key('rail-save'),
-          icon: Icons.star_border_rounded,
+          icon: Icons.star_rounded,
           activeIcon: Icons.star_rounded,
           label: widget.l10n.favorite,
           count: widget.favoriteCount,
@@ -192,7 +192,7 @@ class _HomeFeedOverlayState extends State<HomeFeedOverlay> {
         ),
         InteractionRailItem(
           key: const Key('rail-like'),
-          icon: Icons.favorite_border_rounded,
+          icon: Icons.favorite_rounded,
           activeIcon: Icons.favorite_rounded,
           label: widget.l10n.like,
           count: widget.likeCount,
@@ -202,9 +202,10 @@ class _HomeFeedOverlayState extends State<HomeFeedOverlay> {
         ),
         InteractionRailItem(
           key: const Key('rail-share'),
-          icon: Icons.ios_share_rounded,
-          activeIcon: Icons.ios_share_rounded,
+          icon: Icons.reply_rounded,
+          activeIcon: Icons.reply_rounded,
           label: widget.l10n.share,
+          mirrorIcon: true,
           onTap: widget.onShare,
         ),
       ],

lib/pages/player/widgets/interaction_rail.dart

@@ -5,10 +5,9 @@ import 'package:flutter/material.dart';
 import '../../../core/formatting/count_format.dart';
 import '../../../core/theme/app_colors.dart';
 
-const double _buttonSize = 34;
-const double _iconSize = 24;
-const double _itemGap = 18;
-const Color _buttonBackground = Color(0x80000000);
+const double _buttonSize = 44;
+const double _iconSize = 30;
+const double _itemGap = 22;
 
 /// 互动栏单项：图标、计数与点击。
 class InteractionRailItem {
@@ -21,6 +20,7 @@ class InteractionRailItem {
     this.count,
     this.countKey,
     this.selected = false,
+    this.mirrorIcon = false,
   });
 
   final Key key;
@@ -31,6 +31,7 @@ class InteractionRailItem {
   final int? count;
   final Key? countKey;
   final bool selected;
+  final bool mirrorIcon;
 }
 
 /// 播放页与首页 feed 共用的右侧互动栏：收藏/评论/喜欢/分享。
@@ -60,6 +61,10 @@ class _RailButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final icon = Icon(
+      item.selected ? item.activeIcon : item.icon,
+      size: _iconSize,
+    );
     return Column(
       key: item.key,
       mainAxisSize: MainAxisSize.min,
@@ -69,14 +74,10 @@ class _RailButton extends StatelessWidget {
           child: IconButton(
             onPressed: item.onTap,
             padding: EdgeInsets.zero,
-            style: IconButton.styleFrom(
-              backgroundColor: _buttonBackground,
-              foregroundColor: item.selected ? AppColors.blue : Colors.white,
-            ),
-            icon: Icon(
-              item.selected ? item.activeIcon : item.icon,
-              size: _iconSize,
-            ),
+            color: item.selected ? AppColors.blue : Colors.white,
+            icon: item.mirrorIcon
+                ? Transform.flip(flipX: true, child: icon)
+                : icon,
           ),
         ),
         const SizedBox(height: 2),
@@ -88,7 +89,7 @@ class _RailButton extends StatelessWidget {
           style: const TextStyle(
             color: Colors.white,
             height: 1,
-            fontSize: 11,
+            fontSize: 12,
             fontWeight: FontWeight.w600,
             shadows: [Shadow(blurRadius: 6, color: Colors.black)],
           ),

lib/pages/player/widgets/player_overlay.dart

@@ -141,13 +141,13 @@ class PlayerPlaybackOverlay extends StatelessWidget {
     final compact = MediaQuery.sizeOf(context).height < 700;
     return Positioned(
       right: AppDimens.spaceMd,
-      top: MediaQuery.sizeOf(context).height * (compact ? 0.42 : 0.55),
+      top: MediaQuery.sizeOf(context).height * (compact ? 0.30 : 0.43),
       child: InteractionRail(
         key: const Key('player-interaction-rail'),
         items: [
           InteractionRailItem(
             key: const Key('player-rail-save'),
-            icon: Icons.star_border_rounded,
+            icon: Icons.star_rounded,
             activeIcon: Icons.star_rounded,
             label: data.l10n.favorite,
             count: data.favoriteCount,
@@ -166,7 +166,7 @@ class PlayerPlaybackOverlay extends StatelessWidget {
           ),
           InteractionRailItem(
             key: const Key('player-rail-like'),
-            icon: Icons.favorite_border_rounded,
+            icon: Icons.favorite_rounded,
             activeIcon: Icons.favorite_rounded,
             label: data.l10n.like,
             count: data.likeCount,
@@ -176,9 +176,10 @@ class PlayerPlaybackOverlay extends StatelessWidget {
           ),
           InteractionRailItem(
             key: const Key('player-rail-share'),
-            icon: Icons.ios_share_rounded,
-            activeIcon: Icons.ios_share_rounded,
+            icon: Icons.reply_rounded,
+            activeIcon: Icons.reply_rounded,
             label: data.l10n.share,
+            mirrorIcon: true,
             onTap: actions.onShare,
           ),
         ],