feat: rework the home layout

Recently played keeps its shape. Mixes and playlists now share one row,
half and half on large screens with smaller cards, capped at six each
with a link to the full list. Albums are the ones the user listened to
most recently, which is a new query joining the listening history with
the album tracks. The endless track wall is now "Descubrir".

web-player/src/lib/config.ts

@@ -9,6 +9,7 @@ export const LIBRARY_PICKER_PAGE_SIZE = 50;
 export const EXPLORE_ALBUMS_PAGE_SIZE = 10;
 export const EXPLORE_ALBUM_SLOTS = 10;
 export const HOME_LATEST_PAGE_SIZE = 12;
-export const HOME_ALBUMS_PAGE_SIZE = 12;
+export const HOME_ALBUMS_LIMIT = 12;
+export const HOME_SHELF_LIMIT = 6;
 export const YOUTUBE_FILLER_LIMIT = 27;
 export const PLAYLIST_PICKER_PAGE_SIZE = 50;