Discover Home now has both recently-played modules: a carousel of
album cards and the slim track grid (renamed "Recently Played
Tracks").
- recently.rs records track plays with their album metadata;
load_albums() derives the distinct recent albums from that history
- home.rs threads a recent_albums list into HomeData; HomeView renders
it as a carousel; the artwork pipeline gains ArtworkTarget::RecentAlbum
Also raises the header-gradient contrast: the artwork color is now
saturation-boosted off its average and normalized to a fixed peak
brightness instead of just darkened, so the tint is actually visible.
cc