Player overlay as one piece, Up next always warm and on every source, Jellyfin never unmarks a watched episode

- Overlay: one layout for both designs (top bar with Up next as one of
  its buttons; one action band above the controls for the status pill,
  skips, next episode and end cards), one glass recipe (AppGlass) and
  one pill (FloatingPill); hovering any of them, or the open queue,
  holds the controls up.
- Up next: the first item (or the first continuation episode) is kept
  resolved on the app that puts it up, refreshed before it expires;
  Schedule and drop/paste can queue too.
- Jellyfin: WatchSession (core) counts real watched coverage; an
  episode is watched at 80 % or at its ending after half; a played one
  is re-marked after Playing (10.11 unmarks on open) and never gets a
  position; a peek leaves the old resume point; part-way resume points
  stay under 85 %.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/desktop/lib/src/controls/player_settings.dart

@@ -312,19 +312,18 @@ class PlayerSettingsCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Material(
+    // The app's glass, like the Up next popover and the menus.
+    return AppGlass(
       key: const ValueKey('player-settings-card'),
-      elevation: 12,
-      borderRadius: BorderRadius.circular(16),
       child: SizedBox(
         width: 420,
         child: Padding(
-          padding: const EdgeInsets.fromLTRB(18, 14, 18, 10),
+          padding: const EdgeInsets.fromLTRB(16, 12, 16, 10),
           child: Column(
             mainAxisSize: MainAxisSize.min,
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
-              const Text('Player', style: TextStyle(fontWeight: FontWeight.w700, fontSize: 16)),
+              const Text('Player', style: TextStyle(fontWeight: FontWeight.w600, fontSize: 14)),
               const SizedBox(height: 4),
               ...playerSettingRows(renderMode: renderMode),
               if (tracks) ...[