fix(flutter): 首页 feed 静默刷新与进度条细节

lib/pages/player/widgets/home_feed_overlay.dart

@@ -14,6 +14,7 @@ import 'interaction_rail.dart';
 part 'home_feed_overlay_parts.dart';
 
 const Color _overlayPill = Color(0x66000000);
+const Color _fullBarBackground = Color(0x4D000000);
 const double _topIconSize = 36;
 const double _topIconGlyph = 22;
 const double _tabGap = 22;
@@ -25,7 +26,7 @@ const double _metaFontSize = 12;
 const double _tagFontSize = 11;
 const double _fullBarHeight = 44;
 const double _progressHeight = 2;
-const double _progressHitHeight = 20;
+const double _progressHitHeight = 24;
 const int _maxTags = 4;
 final RegExp _tagSplitter = RegExp(r'[,/、·]');
 
@@ -100,7 +101,7 @@ class _HomeFeedOverlayState extends State<HomeFeedOverlay> {
           _header(context),
           Expanded(
             child: Align(
-              alignment: const Alignment(1.0, 0.45),
+              alignment: const Alignment(1.0, 0.68),
               child: Padding(
                 padding: const EdgeInsets.fromLTRB(0, 0, 10, 16),
                 child: _rail(),
@@ -358,6 +359,12 @@ class _HomeFeedOverlayState extends State<HomeFeedOverlay> {
         height: _fullBarHeight,
         child: Stack(
           children: [
+            Positioned.fill(
+              child: Container(
+                key: const Key('home-feed-full-series-bg'),
+                color: _fullBarBackground,
+              ),
+            ),
             Positioned.fill(
               child: Padding(
                 padding: const EdgeInsets.symmetric(horizontal: 14),

lib/pages/player/widgets/home_feed_overlay_parts.dart

@@ -4,6 +4,8 @@ part of 'home_feed_overlay.dart';
 
 const double _thumbSize = 6;
 const double _thumbActiveSize = 10;
+const double _trackActiveHeight = 4;
+const double _lineCenterFromBottom = 6;
 
 /// 顶部频道 tab：漫剧点击提示即将上线。
 enum _FeedTab {
@@ -199,10 +201,6 @@ class _FeedProgressBarState extends State<_FeedProgressBar> {
         return GestureDetector(
           key: const Key('home-feed-progress'),
           behavior: HitTestBehavior.opaque,
-          onTapDown: (details) {
-            widget.onScrubStart?.call();
-            _commit(details.localPosition.dx / width);
-          },
           onHorizontalDragStart: (details) {
             widget.onScrubStart?.call();
             _update(details.localPosition.dx / width);
@@ -233,11 +231,14 @@ class _FeedProgressBarState extends State<_FeedProgressBar> {
   }
 
   Widget _track(double fraction, double width) {
-    final active = _preview != null;
-    final size = active ? _thumbActiveSize : _thumbSize;
+    final dragging = _preview != null;
+    final trackHeight = dragging ? _trackActiveHeight : widget.height;
+    final size = dragging ? _thumbActiveSize : _thumbSize;
     final left = (width * fraction - size / 2)
         .clamp(0.0, width - size)
         .toDouble();
+    final lineBottom = _lineCenterFromBottom - trackHeight / 2;
+    final thumbBottom = _lineCenterFromBottom - size / 2;
     return SizedBox(
       height: widget.hitHeight,
       child: Stack(
@@ -246,21 +247,25 @@ class _FeedProgressBarState extends State<_FeedProgressBar> {
           Positioned(
             left: 0,
             right: 0,
-            bottom: 0,
-            child: Container(height: widget.height, color: Colors.white24),
+            bottom: lineBottom,
+            child: Container(
+              key: const Key('home-feed-progress-track'),
+              height: trackHeight,
+              color: Colors.white24,
+            ),
           ),
           Positioned(
             left: 0,
-            bottom: 0,
+            bottom: lineBottom,
             child: Container(
               width: width * fraction,
-              height: widget.height,
+              height: trackHeight,
               color: AppColors.blue,
             ),
           ),
           Positioned(
             left: left,
-            bottom: 0,
+            bottom: thumbBottom,
             child: Container(
               key: const Key('home-feed-progress-thumb'),
               width: size,