music: self-hosted scrobbler (Spotify poller, Last.fm + streaming-history importers, /trackers/music, homepage listening card)

- music schema: artists/albums/tracks (+album art), plays with source + dedupe, now_playing,
  spotify_auth, import_state; plays_deduped view hides Last.fm scrobbles Spotify also has
- in-app Spotify poller (60s, leased) started from hooks init; no new role or env needed
- /api/spotify/connect + callback (owner only), /trackers/music public stats
- scripts: music-poll, music-import-lastfm (resumable), music-import-history
- deploy/music-collector: optional host timer with its own role

src/routes/sitemap.xml/+server.ts

@@ -15,6 +15,7 @@ const staticPaths = [
 	'/lists',
 	'/trackers/books',
 	'/trackers/cars',
+	'/trackers/music',
 	'/projects/game-tracker',
 	'/projects/game-tracker/pokemon',
 	'/projects/game-tracker/osu',