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/albums.sql.go

@@ -11,6 +11,18 @@ import (
 	"github.com/jackc/pgx/v5/pgtype"
 )
 
+const countAlbums = `-- name: CountAlbums :one
+SELECT COUNT(*) FROM albums
+`
+
+// M6a: total album count for the /api/library/albums envelope.
+func (q *Queries) CountAlbums(ctx context.Context) (int64, error) {
+	row := q.db.QueryRow(ctx, countAlbums)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
 const countAlbumsMatching = `-- name: CountAlbumsMatching :one
 SELECT COUNT(*) FROM albums WHERE title ILIKE '%' || $1::text || '%'
 `
@@ -160,6 +172,57 @@ func (q *Queries) ListAlbumsAlphaByName(ctx context.Context, arg ListAlbumsAlpha
 	return items, nil
 }
 
+const listAlbumsAlphaWithArtist = `-- name: ListAlbumsAlphaWithArtist :many
+SELECT albums.id, albums.title, albums.sort_title, albums.artist_id, albums.release_date, albums.mbid, albums.cover_art_path, albums.created_at, albums.updated_at, artists.name AS artist_name
+FROM albums
+JOIN artists ON artists.id = albums.artist_id
+ORDER BY albums.sort_title, albums.id
+LIMIT $1 OFFSET $2
+`
+
+type ListAlbumsAlphaWithArtistParams struct {
+	Limit  int32
+	Offset int32
+}
+
+type ListAlbumsAlphaWithArtistRow struct {
+	Album      Album
+	ArtistName string
+}
+
+// M6a: alpha-sorted album list joined with artist_name. Used by
+// /api/library/albums for the wrapping-grid page. Stable id-tiebreak.
+func (q *Queries) ListAlbumsAlphaWithArtist(ctx context.Context, arg ListAlbumsAlphaWithArtistParams) ([]ListAlbumsAlphaWithArtistRow, error) {
+	rows, err := q.db.Query(ctx, listAlbumsAlphaWithArtist, arg.Limit, arg.Offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []ListAlbumsAlphaWithArtistRow
+	for rows.Next() {
+		var i ListAlbumsAlphaWithArtistRow
+		if err := rows.Scan(
+			&i.Album.ID,
+			&i.Album.Title,
+			&i.Album.SortTitle,
+			&i.Album.ArtistID,
+			&i.Album.ReleaseDate,
+			&i.Album.Mbid,
+			&i.Album.CoverArtPath,
+			&i.Album.CreatedAt,
+			&i.Album.UpdatedAt,
+			&i.ArtistName,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const listAlbumsByArtist = `-- name: ListAlbumsByArtist :many
 SELECT id, title, sort_title, artist_id, release_date, mbid, cover_art_path, created_at, updated_at FROM albums WHERE artist_id = $1 ORDER BY release_date NULLS LAST, sort_title
 `