feat(video): make the native player the default

5.1.0 already serialized useNativePlayer: false, so existing installs
need a one-shot migrate. WebView stays as a legacy opt-out.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/screens/channel/video/native_video_store.dart

@@ -30,6 +30,8 @@ abstract class NativeVideoStoreBase
     with Store
     implements NativeVideoPlayerInterface {
   static int _nextId = 0;
+  static const _legacyWebViewInSettings =
+      'the legacy WebView player in Settings';
 
   @override
   final String userLogin;
@@ -465,7 +467,7 @@ abstract class NativeVideoStoreBase
       // channel is expected to fail here and the overlay handles it.
       if (_streamInfo != null) {
         _showErrorOverlay(
-          'Native player failed to load. Try the standard player in Settings.',
+          'Native player failed to load. Try $_legacyWebViewInSettings.',
         );
       }
     });
@@ -560,7 +562,7 @@ abstract class NativeVideoStoreBase
     _stallRecoveryTimer?.cancel();
     final errorMessage =
         eventData?['message'] as String? ??
-        'Playback error. Try refreshing or switch to the standard player in Settings.';
+        'Playback error. Try refreshing or switch to $_legacyWebViewInSettings.';
     final errorCode = eventData?['code'] as String?;
     final statusCode = eventData?['statusCode'] as int?;
 
@@ -751,8 +753,8 @@ abstract class NativeVideoStoreBase
       _loading = false;
       _showErrorOverlay(
         bouncing
-            ? 'Twitch is having trouble with this channel right now. Try again in a moment, or switch to the standard player in Settings.'
-            : 'Stream stalled. Try refreshing or switch to the standard player in Settings.',
+            ? 'Twitch is having trouble with this channel right now. Try again in a moment, or switch to $_legacyWebViewInSettings.'
+            : 'Stream stalled. Try refreshing or switch to $_legacyWebViewInSettings.',
       );
     });
   }

lib/screens/settings/stores/settings_store.dart

@@ -8,8 +8,11 @@ part 'settings_store.g.dart';
 class SettingsStore extends _SettingsStoreBase with _$SettingsStore {
   SettingsStore();
 
-  factory SettingsStore.fromJson(Map<String, dynamic> json) =>
-      _$SettingsStoreFromJson(json);
+  factory SettingsStore.fromJson(Map<String, dynamic> json) {
+    final store = _$SettingsStoreFromJson(json);
+    store._migrateNativePlayerDefault();
+    return store;
+  }
   Map<String, dynamic> toJson() => _$SettingsStoreToJson(this);
 }
 
@@ -65,7 +68,7 @@ abstract class _SettingsStoreBase with Store {
   static const defaultShowVideo = true;
   static const defaultDefaultToHighestQuality = false;
   static const defaultUseTextureRendering = true;
-  static const defaultUseNativePlayer = false;
+  static const defaultUseNativePlayer = true;
 
   static const defaultShowOverlay = true;
   static const defaultToggleableOverlay = false;
@@ -88,6 +91,19 @@ abstract class _SettingsStoreBase with Store {
   @observable
   var useNativePlayer = defaultUseNativePlayer;
 
+  /// 5.2.0 made native the default. 5.1.0 already wrote
+  /// `useNativePlayer: false` into saved settings, so a Dart default
+  /// change alone would leave existing installs on WebView.
+  @JsonKey(defaultValue: false)
+  var nativePlayerV52Migrated = false;
+
+  @action
+  void _migrateNativePlayerDefault() {
+    if (nativePlayerV52Migrated) return;
+    useNativePlayer = true;
+    nativePlayerV52Migrated = true;
+  }
+
   // Overlay options
   @JsonKey(defaultValue: defaultShowOverlay)
   @observable

lib/screens/settings/stores/settings_store.g.dart

@@ -23,7 +23,8 @@ SettingsStore _$SettingsStoreFromJson(
   ..showVideo = json['showVideo'] as bool? ?? true
   ..defaultToHighestQuality = json['defaultToHighestQuality'] as bool? ?? false
   ..useTextureRendering = json['useTextureRendering'] as bool? ?? true
-  ..useNativePlayer = json['useNativePlayer'] as bool? ?? false
+  ..useNativePlayer = json['useNativePlayer'] as bool? ?? true
+  ..nativePlayerV52Migrated = json['nativePlayerV52Migrated'] as bool? ?? false
   ..showOverlay = json['showOverlay'] as bool? ?? true
   ..toggleableOverlay = json['toggleableOverlay'] as bool? ?? false
   ..showLatency = json['showLatency'] as bool? ?? false
@@ -106,6 +107,7 @@ Map<String, dynamic> _$SettingsStoreToJson(
   'defaultToHighestQuality': instance.defaultToHighestQuality,
   'useTextureRendering': instance.useTextureRendering,
   'useNativePlayer': instance.useNativePlayer,
+  'nativePlayerV52Migrated': instance.nativePlayerV52Migrated,
   'showOverlay': instance.showOverlay,
   'toggleableOverlay': instance.toggleableOverlay,
   'showLatency': instance.showLatency,
@@ -1159,6 +1161,18 @@ mixin _$SettingsStore on _SettingsStoreBase, Store {
     }
   }
 
+  @override
+  void _migrateNativePlayerDefault() {
+    final _$actionInfo = _$_SettingsStoreBaseActionController.startAction(
+      name: '_SettingsStoreBase._migrateNativePlayerDefault',
+    );
+    try {
+      return super._migrateNativePlayerDefault();
+    } finally {
+      _$_SettingsStoreBaseActionController.endAction(_$actionInfo);
+    }
+  }
+
   @override
   void resetVideoSettings() {
     final _$actionInfo = _$_SettingsStoreBaseActionController.startAction(

lib/screens/settings/video_settings.dart

@@ -26,9 +26,9 @@ class VideoSettings extends StatelessWidget {
           ),
           if (settingsStore.showVideo)
             SettingsListSwitch(
-              title: 'Native player (experimental)',
+              title: 'Native player',
               subtitle: const Text(
-                'More performant video player with auto picture-in-picture and quality selection.',
+                'Picture-in-Picture, quality selection, and lower latency. Turn off to use the legacy WebView player.',
               ),
               value: settingsStore.useNativePlayer,
               onChanged: (newValue) =>