fix(native): bound cross-platform lifecycle ownership

lib/screens/video_player_screen.dart

@@ -13,6 +13,7 @@ import 'package:sentry_flutter/sentry_flutter.dart';
 
 import '../mpv/mpv.dart';
 import '../mpv/player/platform/player_android.dart';
+import '../mpv/player/player_native.dart';
 
 import '../services/scrub_preview_source.dart';
 import '../media/media_backend.dart';
@@ -122,6 +123,16 @@ part 'video_player/parts/watch_together.dart';
 
 final WakelockController _wakelockController = WakelockController();
 
+/// Whether an in-place source reload may start the replacement media.
+///
+/// Reloading a paused player must not manufacture a new play intent. Watch
+/// Together and explicit paused starts keep owning the eventual resume.
+bool shouldAutoStartReloadedMedia({
+  required bool wasPlayingBeforeReload,
+  required bool watchTogetherOwnsStart,
+  required bool startPaused,
+}) => wasPlayingBeforeReload && !watchTogetherOwnsStart && !startPaused;
+
 /// The in-place media-source transitions a [VideoPlayerScreenState] can run.
 /// They are mutually exclusive by construction — entry points bail while a
 /// transition is in flight.
@@ -279,6 +290,7 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
   static bool isNavigationActive(VideoPlayerLaunchIdentity identity) => _activeRouteGuard.blocks(identity);
 
   Player? player;
+  Player? _bootstrapPlayer;
   VideoVolumeController? _volumeController;
   bool _isPlayerInitialized = false;
   String? _playerInitializationError;
@@ -884,6 +896,9 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
     if (identical(player, attemptPlayer)) {
       player = null;
     }
+    if (identical(_bootstrapPlayer, attemptPlayer)) {
+      _bootstrapPlayer = null;
+    }
     try {
       await _tearDownFailedPlayerAttempt(attemptPlayer);
     } catch (e, st) {
@@ -955,6 +970,9 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
       final currentPlayer = Player(useExoPlayer: useExoPlayer);
       attemptPlayer = currentPlayer;
       if (!mounted || generation != _playerInitializationGeneration) return;
+      if (currentPlayer is PlayerNative && currentPlayer.requiresProvisionalTextureSurface) {
+        setState(() => _bootstrapPlayer = currentPlayer);
+      }
       if (Platform.isAndroid && useExoPlayer) {
         await currentPlayer.setLogLevel(debugLoggingEnabled ? 'v' : 'warn');
         if (!mounted || generation != _playerInitializationGeneration) return;
@@ -1194,6 +1212,7 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
       if (mounted) {
         setState(() {
           _isPlayerInitialized = true;
+          _bootstrapPlayer = null;
         });
 
         // Restart sleep timer if we're starting a new playback session
@@ -1548,8 +1567,9 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
     final volumeController = _volumeController;
     _volumeController = null;
     volumeController?.dispose();
-    final playerToDispose = player;
+    final playerToDispose = player ?? _bootstrapPlayer;
     player = null;
+    _bootstrapPlayer = null;
     if (playerToDispose != null) {
       // Keep the native display mode (tvOS HDMI criteria) across a
       // player→player handoff; the replacement screen primes its own.
@@ -1866,7 +1886,7 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
               ? _buildVideoPlayer(sheetContext)
               : (_playerInitializationError != null
                     ? _buildInitializationError(_playerInitializationError!)
-                    : _buildLoadingSpinner()),
+                    : _buildPlayerInitializationSurface()),
         ),
       ),
     );