Migrate hero, section-header, and section-split to MudGrid with xs/sm/md breakpoints (Spacing=0 to keep color panels flush); add @media collapse rules for genre/features card grids and the CTA banner. Visual styling unchanged at desktop width.
Add IsPaused/OnPause to TrackCard, make TracksGallery controlled, and
drive the active track from PlayerService.CurrentTrack as the single
source of truth.
Add StateChanged multicast event to IPlayerService so AudioPlayerBar and TracksView
re-render themselves without relying on the IsFixed cascade re-render path. Clear
_selectedTrack in TracksView when IsLoaded drops (stop, unload, end-of-track). Set
IsLoaded=false in OnPlaybackEndCallback so end-of-track triggers the same clear path.
Add JS-module readiness probe in AudioInteropService; delete dead TS and buffered C#
path; consolidate GetPlayIcon/FormatTime helpers; fix misleading minimize dock icon.
daniel-c-harvey