Rewrites HomeScreen body to match the web home layout:
- Playlists row: For-You + 3 Songs-like + user playlists, with
PlaylistPlaceholderCard for empty slots driven by
systemPlaylistsStatusProvider
- Recently added: 50 albums in 2 rows of 25 sharing a scroll controller
- Rediscover: separate scrollers for albums (square) and artists
(circular) — same condition as web's two-scroller branch
- Most played: 75 tracks in 3 rows of 25 using new CompactTrackCard
- Last played: existing single row layout preserved
Empty states use design-system understated-mythic copy mirrored
verbatim from web. Loading state uses DelayedLoading so brief network
blips don't flash a spinner.
Closes the visible parity gap the operator hit when first opening the
Flutter app on a real device.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
a2f6bdb44f