fix(flutter): 加速态隐藏底部选集与清屏按钮

lib/pages/player/widgets/player_overlay.dart

@@ -170,7 +170,8 @@ class PlayerPlaybackOverlay extends StatelessWidget {
           if (controlsVisible) _bottomInfo(context),
           if (data.boosting) _boostHint(),
           _bottomProgress(),
-          _bottomActions(),
+          // 加速态只保留进度条与提示，便于全屏快进时看清画面。
+          if (!data.boosting) _bottomActions(),
         ],
       ),
     );

test/player/player_fullscreen_test.dart

@@ -184,6 +184,8 @@ void main() {
 
     expect(find.byKey(const Key('player-speed-boost-hint')), findsOneWidget);
     expect(find.byKey(const Key('player-progress')), findsOneWidget);
+    expect(find.byKey(const Key('player-episodes-pill')), findsNothing);
+    expect(find.byKey(const Key('player-bottom-clear-screen')), findsNothing);
     expect(find.byKey(const Key('player-interaction-rail')), findsNothing);
     expect(find.byKey(const Key('player-controls-bottom')), findsNothing);
     expect(
@@ -200,6 +202,8 @@ void main() {
     await tester.pumpAndSettle();
 
     expect(find.byKey(const Key('player-speed-boost-hint')), findsNothing);
+    expect(find.byKey(const Key('player-episodes-pill')), findsOneWidget);
+    expect(find.byKey(const Key('player-bottom-clear-screen')), findsOneWidget);
     expect(find.byKey(const Key('player-interaction-rail')), findsOneWidget);
     expect(find.byKey(const Key('player-controls-bottom')), findsOneWidget);
     expect(
@@ -232,6 +236,8 @@ void main() {
     await tester.pump(const Duration(milliseconds: 700));
     await tester.pump();
     expect(find.byKey(const Key('player-speed-boost-hint')), findsOneWidget);
+    expect(find.byKey(const Key('player-episodes-pill')), findsNothing);
+    expect(find.byKey(const Key('player-bottom-clear-screen')), findsNothing);
     await gesture.up();
     await tester.pumpAndSettle();
 
@@ -239,6 +245,9 @@ void main() {
     expect(find.byKey(const Key('player-speed-boost-hint')), findsNothing);
     expect(find.byKey(const Key('player-interaction-rail')), findsNothing);
     expect(find.byTooltip('Exit clear screen'), findsOneWidget);
+    // 清屏态本来显示的选集胶囊与右下按钮，在加速结束后恢复。
+    expect(find.byKey(const Key('player-episodes-pill')), findsOneWidget);
+    expect(find.byKey(const Key('player-bottom-clear-screen')), findsOneWidget);
     expect(
       find.descendant(
         of: find.byKey(const Key('player-speed-entry')),