Clicking an album card opens the album detail view: a back button,
the album header (224px artwork, title, artist, and info line — year,
label, genre, track count, duration — plus play / shuffle / favorite /
more action buttons), and the track list with a column header (#,
title, artist, duration, quality).
- album.rs: fetches the album via QbzCore::get_album, maps it (info
line, per-track quality tier, durations) onto the AlbumState global,
and loads the header artwork through the shared image cache.
- AlbumPageView.slint, with NavState driving the shell content region
between Home and the album page.
- Album clicks bubble AlbumCard -> Carousel -> HomeView -> AppShell ->
AppWindow -> main; the back button returns to Home.
cc