fix(playback): apply themes to player and EPG panels (#1541)

* fix(playback): apply themes to player and EPG panels

* test(playback): verify active recording icon theme

* fix(epg): keep loading shimmer visible in both themes

CLAUDE.md

@@ -847,6 +847,13 @@ app as a real argument, so it is not an option.
 
 **Video Players**:
 
+- The Embedded MPV native-view dock follows app theme tokens as a solid app
+  surface, including Material icon-button disabled states. Over-video loading,
+  stalled and feedback overlays keep a paired light-on-dark palette. Video
+  viewports remain black in windowed and fullscreen modes. Shared EPG panels
+  use the library-local app-token palette in `libs/ui/epg/src/lib/_epg-theme.scss`.
+  Theme/contrast contract: `docs/architecture/iptvnator-ui-guidelines.md`.
+
 - Built-in web players: HTML5+hls.js, Video.js, and ArtPlayer. The HTML5
   player and ArtPlayer pick their source engine from one URL rule,
   `resolvePlaybackUrlSourceKind()` in `libs/playback/util` (`mpd` → Shaka,