fix(player): 预解码观看全集首帧

lib/pages/player/player_logic.dart

@@ -230,7 +230,6 @@ class PlayerLogic extends ChangeNotifier {
     cancelScrub();
     await session.pauseForRouteHandoff();
     _logFeedHandoff('paused');
-    await saveCurrentProgress();
   }
 
   /// 独立播放页关闭并恢复首页路由后，等原生播放器实际恢复再结束交接。
@@ -1230,27 +1229,38 @@ class PlayerLogic extends ChangeNotifier {
     Drama drama,
     int index,
   ) async {
-    final initialFrameBytes = await PlayerFrameCapture.capture(
+    final fallbackPosterUrl = index >= 0 && index < drama.episodes.length
+        ? drama.episodes[index].posterUrl
+        : null;
+    final preparedFrame = await PlayerFrameCapture.captureAndPrecache(
       context: context,
       boundaryKey: renderBoundaryKey,
       source: 'watch-all',
+      fallbackPosterUrl: fallbackPosterUrl,
     );
     if (!context.mounted) return;
     await pauseForFullPlayer();
     if (!context.mounted) return;
-    await Navigator.of(context).push(
+    final route = Navigator.of(context).push(
       FadePageRoute<void>(
-        transitionDuration: const Duration(milliseconds: 180),
+        transitionDuration: Duration.zero,
+        reverseTransitionDuration: Duration.zero,
         builder: (_) => PlayerPage(
           drama: drama,
           initialIndex: index,
           wallet: wallet,
           downloads: downloads,
-          revealAfterFirstFrame: initialFrameBytes != null,
-          initialFrameBytes: initialFrameBytes,
+          revealAfterFirstFrame: preparedFrame.isReady,
+          initialFrameBytes: preparedFrame.bytes,
+          initialFrameProvider: preparedFrame.provider,
         ),
       ),
     );
+    if (kDebugMode) {
+      debugPrint('[player-entry] phase=route-pushed source=watch-all ms=0');
+    }
+    unawaited(saveCurrentProgress());
+    await route;
     if (!isMounted()) return;
     await resumeAfterFullPlayer();
   }