feat(flutter): 播放页长按手势与加速态

test/player/player_fullscreen_test.dart

@@ -152,6 +152,102 @@ void main() {
     expect(find.byTooltip('Clear screen'), findsOneWidget);
   });
 
+  testWidgets('should_open_more_sheet_on_center_long_press', (tester) async {
+    await _pumpApp(tester);
+    await _openSeriesPlayer(tester);
+    expect(find.byKey(const Key('player-play-toggle')), findsNothing);
+
+    final gesture = await tester.startGesture(const Offset(195, 300));
+    await tester.pump(const Duration(milliseconds: 700));
+    await tester.pump();
+    await gesture.up();
+    await tester.pumpAndSettle();
+
+    expect(find.byKey(const Key('player-more-sheet')), findsOneWidget);
+    await tester.tap(find.byKey(const Key('player-more-close')));
+    await tester.pumpAndSettle();
+    // 长按弹更多不改播放状态，仍处于播放中。
+    expect(find.byKey(const Key('player-play-toggle')), findsNothing);
+    expect(tester.takeException(), isNull);
+  });
+
+  testWidgets('should_boost_speed_on_side_long_press_and_restore', (
+    tester,
+  ) async {
+    await _pumpApp(tester);
+    await _openSeriesPlayer(tester);
+    expect(find.byKey(const Key('player-interaction-rail')), findsOneWidget);
+
+    final gesture = await tester.startGesture(const Offset(60, 300));
+    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-progress')), findsOneWidget);
+    expect(find.byKey(const Key('player-interaction-rail')), findsNothing);
+    expect(find.byKey(const Key('player-controls-bottom')), findsNothing);
+    expect(
+      find.descendant(
+        of: find.byKey(const Key('player-speed-entry')),
+        matching: find.text('2.0x'),
+      ),
+      findsOneWidget,
+    );
+    // 加速与清屏都不改变播放状态。
+    expect(find.byKey(const Key('player-play-toggle')), findsNothing);
+
+    await gesture.up();
+    await tester.pumpAndSettle();
+
+    expect(find.byKey(const Key('player-speed-boost-hint')), findsNothing);
+    expect(find.byKey(const Key('player-interaction-rail')), findsOneWidget);
+    expect(find.byKey(const Key('player-controls-bottom')), findsOneWidget);
+    expect(
+      find.descendant(
+        of: find.byKey(const Key('player-speed-entry')),
+        matching: find.text('1.0x'),
+      ),
+      findsOneWidget,
+    );
+    expect(find.byKey(const Key('player-play-toggle')), findsNothing);
+
+    // 右侧 1/3 同样触发加速。
+    final rightSide = await tester.startGesture(const Offset(330, 300));
+    await tester.pump(const Duration(milliseconds: 700));
+    await tester.pump();
+    expect(find.byKey(const Key('player-speed-boost-hint')), findsOneWidget);
+    await rightSide.up();
+    await tester.pumpAndSettle();
+    expect(find.byKey(const Key('player-speed-boost-hint')), findsNothing);
+  });
+
+  testWidgets('should_keep_previous_clear_state_after_boost', (tester) async {
+    await _pumpApp(tester);
+    await _openSeriesPlayer(tester);
+    await tester.tap(find.byKey(const Key('player-bottom-clear-screen')));
+    await tester.pumpAndSettle();
+    expect(find.byKey(const Key('player-interaction-rail')), findsNothing);
+
+    final gesture = await tester.startGesture(const Offset(60, 300));
+    await tester.pump(const Duration(milliseconds: 700));
+    await tester.pump();
+    expect(find.byKey(const Key('player-speed-boost-hint')), findsOneWidget);
+    await gesture.up();
+    await tester.pumpAndSettle();
+
+    // 本来已清屏，松手后仍保持清屏，只恢复倍速与提示。
+    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);
+    expect(
+      find.descendant(
+        of: find.byKey(const Key('player-speed-entry')),
+        matching: find.text('1.0x'),
+      ),
+      findsOneWidget,
+    );
+  });
+
   testWidgets('should_fit_player_header_on_320_width', (tester) async {
     await _pumpApp(tester, size: const Size(320, 568));
     await _openSeriesPlayer(tester);