fix(recommend): 稳定进度拖动与清屏状态

test/home/home_preview_layout_test.dart

@@ -23,7 +23,6 @@ import 'package:fruitshorts/l10n/app_localizations.dart';
 import 'package:fruitshorts/pages/home/home_feed_channel.dart';
 import 'package:fruitshorts/pages/player/widgets/home_feed_header.dart';
 import 'package:fruitshorts/pages/player/widgets/home_feed_overlay.dart';
-import 'package:fruitshorts/pages/player/widgets/scrub_preview_card.dart';
 import 'package:fruitshorts/pages/player/player_view.dart';
 import 'package:video_player/video_player.dart';
 
@@ -681,8 +680,12 @@ void main() {
     );
     expect(
       tester.getSize(find.byKey(const Key('home-feed-progress'))).height,
-      greaterThanOrEqualTo(24),
+      greaterThanOrEqualTo(28),
     );
+    final idleTrackCenter = tester
+        .getRect(find.byKey(const Key('home-feed-progress-track')))
+        .center
+        .dy;
     expect(
       tester
           .getRect(find.byKey(const Key('home-feed-progress-thumb')))
@@ -705,7 +708,33 @@ void main() {
     expect(scrubVisibility.last, isTrue);
     expect(find.byKey(const Key('home-feed-title')), findsNothing);
     expect(find.byKey(const Key('rail-save')), findsNothing);
-    expect(find.byType(ScrubPreviewCard), findsOneWidget);
+    expect(find.byKey(const Key('scrub-preview-time-bubble')), findsOneWidget);
+    final bubbleRect = tester.getRect(
+      find.byKey(const Key('scrub-preview-time-bubble')),
+    );
+    expect(bubbleRect.left, greaterThanOrEqualTo(12));
+    expect(
+      bubbleRect.right,
+      lessThanOrEqualTo(
+        tester.getRect(find.byKey(const Key('home-feed-gesture'))).right - 12,
+      ),
+    );
+    await gesture.moveBy(const Offset(-600, 0));
+    await tester.pump();
+    expect(
+      tester.getRect(find.byKey(const Key('scrub-preview-time-bubble'))).left,
+      closeTo(12, 0.1),
+    );
+    await gesture.moveBy(const Offset(1200, 0));
+    await tester.pump();
+    expect(
+      tester.getRect(find.byKey(const Key('scrub-preview-time-bubble'))).right,
+      closeTo(
+        tester.getRect(find.byKey(const Key('home-feed-gesture'))).right - 12,
+        0.1,
+      ),
+    );
+    await tester.pump(const Duration(milliseconds: 130));
     expect(
       tester.getSize(find.byKey(const Key('home-feed-progress-thumb'))),
       const Size(14, 14),
@@ -714,6 +743,13 @@ void main() {
       tester.getSize(find.byKey(const Key('home-feed-progress-track'))).height,
       6,
     );
+    expect(
+      tester
+          .getRect(find.byKey(const Key('home-feed-progress-track')))
+          .center
+          .dy,
+      closeTo(idleTrackCenter, 0.1),
+    );
     expect(
       tester
           .getRect(find.byKey(const Key('home-feed-progress-thumb')))
@@ -729,8 +765,8 @@ void main() {
     );
     await gesture.up();
     await tester.pumpAndSettle();
-    expect(scrubVisibility.last, isFalse);
-    expect(find.byKey(const Key('home-feed-title')), findsOneWidget);
+    expect(scrubVisibility.last, isTrue);
+    expect(find.byKey(const Key('home-feed-title')), findsNothing);
     expect(seeked, isNotNull);
     expect(seeked!.inSeconds, greaterThan(0));
     expect(
@@ -742,6 +778,11 @@ void main() {
       2,
     );
 
+    await tester.tap(find.byKey(const Key('home-feed-gesture')));
+    await tester.pump();
+    expect(scrubVisibility.last, isFalse);
+    expect(find.byKey(const Key('home-feed-title')), findsOneWidget);
+
     await tester.tap(find.byKey(const Key('home-feed-full-series')));
     await tester.pump();
     expect(opened, 1);

test/recommend/recommend_sections_test.dart

@@ -35,6 +35,7 @@ void main() {
     expect(find.byKey(const Key('recommend-tab-playlist')), findsOneWidget);
     expect(find.byKey(const Key('recommend-tab-all')), findsOneWidget);
     expect(find.byKey(const Key('recommend-feed-player')), findsOneWidget);
+    expect(find.byKey(const Key('recommend-top-gradient')), findsOneWidget);
     final recommendText = tester.widget<Text>(
       find.descendant(
         of: find.byKey(const Key('recommend-tab-recommend')),
@@ -93,6 +94,21 @@ void main() {
     expect(find.byType(PageView), findsOneWidget);
     expect(find.byKey(const Key('recommend-section-hits')), findsNothing);
     expect(find.byType(AppBottomNav), findsOneWidget);
+
+    final progress = find.byKey(const Key('home-feed-progress'));
+    final progressCenterY = tester.getCenter(progress).dy;
+    final scrub = await tester.startGesture(tester.getCenter(progress));
+    await scrub.moveBy(const Offset(40, 0));
+    await tester.pump(const Duration(milliseconds: 130));
+    expect(find.byKey(const Key('recommend-top-nav')), findsOneWidget);
+    expect(tester.getCenter(progress).dy, closeTo(progressCenterY, 0.1));
+    await scrub.up();
+    await tester.pumpAndSettle();
+    expect(find.byKey(const Key('recommend-top-nav')), findsOneWidget);
+
+    await tester.tap(find.byKey(const Key('recommend-tab-playlist')));
+    await tester.pumpAndSettle();
+    expect(find.byKey(const Key('recommend-section-hits')), findsOneWidget);
   });
 
   testWidgets('should_render_playlist_sections_and_horizontal_cards', (