feat(db): add M6a library-list + artist-tracks queries

Appends ListArtistsAlphaWithCovers, ListAlbumsAlphaWithArtist,
CountAlbums, and ListArtistTracksForUser queries; regenerates sqlc.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/db/dbq/tracks.sql.go

@@ -109,6 +109,76 @@ func (q *Queries) GetTrackByPath(ctx context.Context, filePath string) (Track, e
 	return i, err
 }
 
+const listArtistTracksForUser = `-- name: ListArtistTracksForUser :many
+SELECT t.id, t.title, t.album_id, t.artist_id, t.track_number, t.disc_number, t.duration_ms, t.file_path, t.file_size, t.file_format, t.bitrate, t.mbid, t.genre, t.added_at, t.updated_at,
+       albums.title AS album_title,
+       artists.name AS artist_name
+FROM tracks t
+JOIN albums  ON albums.id  = t.album_id
+JOIN artists ON artists.id = t.artist_id
+WHERE t.artist_id = $1
+  AND NOT EXISTS (
+      SELECT 1 FROM lidarr_quarantine q
+      WHERE q.user_id = $2 AND q.track_id = t.id
+  )
+ORDER BY albums.release_date NULLS LAST, albums.sort_title,
+         t.disc_number NULLS FIRST, t.track_number NULLS FIRST, t.id
+`
+
+type ListArtistTracksForUserParams struct {
+	ArtistID pgtype.UUID
+	UserID   pgtype.UUID
+}
+
+type ListArtistTracksForUserRow struct {
+	Track      Track
+	AlbumTitle string
+	ArtistName string
+}
+
+// M6a: every track for the artist across their albums, with album_title
+// and artist_name joined. Honors per-user lidarr_quarantine. Used by
+// /api/artists/{id}/tracks for the artist-card play affordance, which
+// shuffles client-side. Ordering matches album/track natural order so
+// the shuffle has a deterministic input.
+func (q *Queries) ListArtistTracksForUser(ctx context.Context, arg ListArtistTracksForUserParams) ([]ListArtistTracksForUserRow, error) {
+	rows, err := q.db.Query(ctx, listArtistTracksForUser, arg.ArtistID, arg.UserID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []ListArtistTracksForUserRow
+	for rows.Next() {
+		var i ListArtistTracksForUserRow
+		if err := rows.Scan(
+			&i.Track.ID,
+			&i.Track.Title,
+			&i.Track.AlbumID,
+			&i.Track.ArtistID,
+			&i.Track.TrackNumber,
+			&i.Track.DiscNumber,
+			&i.Track.DurationMs,
+			&i.Track.FilePath,
+			&i.Track.FileSize,
+			&i.Track.FileFormat,
+			&i.Track.Bitrate,
+			&i.Track.Mbid,
+			&i.Track.Genre,
+			&i.Track.AddedAt,
+			&i.Track.UpdatedAt,
+			&i.AlbumTitle,
+			&i.ArtistName,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const listTracksByAlbum = `-- name: ListTracksByAlbum :many
 SELECT id, title, album_id, artist_id, track_number, disc_number, duration_ms, file_path, file_size, file_format, bitrate, mbid, genre, added_at, updated_at FROM tracks WHERE album_id = $1 ORDER BY disc_number NULLS LAST, track_number NULLS LAST
 `