Rework the Music Discover tab so every section is gated through the
curator's lists, ensuring only high-quality content appears.
- Add useFeaturedMusicTracks hook: queries Ditto relay with sort:hot
and distinct:author for curated artists. The #1 hot track becomes
the hero; the rest populate the Featured horizontal scroll with no
artist repeats.
- Add useMusicCuratorFollows hook: fetches Heather's kind 3 follow
list to filter playlists to people she follows.
- Add authors param to useMusicPlaylists and useMusicTracksByGenre
so both can be restricted to specific pubkeys.
- Rewire MusicDiscoverTab: New Tracks and genre filtering now use
curated artists only; playlists use curator follows; section renamed
from 'Recently Added' to 'New Tracks'.
Mary Kate Fain
f677c131c0