feat: the Wanted view lists artists A–Z with their albums inside, each album's tracks a click away (M502 #5572)

The list runs like the library: artists by the library's sort name, each
artist's albums oldest first, grouped under the artist (linked into the
library when it holds them). A filter narrows it to an artist or album by
name, on the server, so it finds what has not been scrolled to. Tracks
opens an album's track list: the library's own for an album it holds, a
lost file marked, otherwise MusicBrainz's standard edition, named.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/db/queries/wanted.sql

@@ -177,7 +177,10 @@ DELETE FROM wants WHERE id = $1;
 
 -- name: ListWants :many
 -- The Wanted page: open wants (all but missing ones, or only missing ones),
--- or what was held most recently.
+-- or the held ones. Ordered like the library (#5572): artists A–Z by the
+-- library's sort name when it holds the artist, each artist's albums by
+-- release date, so the page groups them as they arrive. q narrows to an
+-- artist or album title; total counts every match, past the page.
 SELECT w.id, w.release_group_mbid, w.artist_mbid, w.artist_name, w.title, w.reason,
        w.album_id, w.wanted_at, w.fulfilled_at,
        -- A request names an album before the catalogue has read it: the
@@ -186,7 +189,8 @@ SELECT w.id, w.release_group_mbid, w.artist_mbid, w.artist_name, w.title, w.reas
        COALESCE(g.secondary_types, '{}')::text[]                                  AS secondary_types,
        COALESCE(NULLIF(w.first_release_date, ''), g.first_release_date, '')::text AS first_release_date,
        u.username AS requested_by,
-       (SELECT ar.id FROM artists ar WHERE ar.mbid = w.artist_mbid) AS library_artist_id,
+       la.id AS library_artist_id,
+       COUNT(*) OVER () AS total,
        -- The search schedule's last look (#5521), and the download running.
        w.searched_at, w.search_outcome, w.search_considered, w.best_release, w.best_verdict, w.search_error,
        -- Its latest download, running or ended, and what the import made of
@@ -199,6 +203,7 @@ SELECT w.id, w.release_group_mbid, w.artist_mbid, w.artist_name, w.title, w.reas
   FROM wants w
   LEFT JOIN users u ON u.id = w.created_by
   LEFT JOIN mb_release_groups g ON g.mbid = w.release_group_mbid
+  LEFT JOIN LATERAL (SELECT ar.id, ar.sort_name FROM artists ar WHERE ar.mbid = w.artist_mbid LIMIT 1) la ON true
   LEFT JOIN grabs gr ON gr.id = (SELECT x.id FROM grabs x WHERE x.want_id = w.id
                                    ORDER BY x.ended_at IS NULL DESC, x.grabbed_at DESC LIMIT 1)
  WHERE CASE sqlc.arg(state)::text
@@ -206,9 +211,26 @@ SELECT w.id, w.release_group_mbid, w.artist_mbid, w.artist_name, w.title, w.reas
          WHEN 'missing' THEN w.fulfilled_at IS NULL AND w.reason = 'missing'
          ELSE                w.fulfilled_at IS NULL AND w.reason <> 'missing'
        END
- ORDER BY COALESCE(w.fulfilled_at, w.wanted_at) DESC, w.id
+   AND (sqlc.arg(q)::text = ''
+        OR strpos(lower(w.artist_name), lower(sqlc.arg(q)::text)) > 0
+        OR strpos(lower(w.title), lower(sqlc.arg(q)::text)) > 0)
+ ORDER BY lower(COALESCE(NULLIF(la.sort_name, ''), w.artist_name)), w.artist_mbid,
+          NULLIF(COALESCE(NULLIF(w.first_release_date, ''), g.first_release_date, ''), '') NULLS LAST,
+          lower(w.title), w.id
  LIMIT sqlc.arg(max_rows) OFFSET sqlc.arg(skip);
 
+-- name: GetWantAlbum :one
+-- What the Wanted view's track list needs of a want (#5572).
+SELECT id, release_group_mbid, album_id FROM wants WHERE id = $1;
+
+-- name: ListLibraryAlbumTracks :many
+-- A held or missing album's own tracks, for the Wanted view's track list;
+-- missing says its file is gone.
+SELECT title, disc_number, track_number, duration_ms, (missing_since IS NOT NULL)::bool AS missing
+  FROM tracks
+ WHERE album_id = $1
+ ORDER BY disc_number NULLS FIRST, track_number NULLS LAST, title;
+
 -- name: CountWants :one
 SELECT COUNT(*) FILTER (WHERE fulfilled_at IS NULL AND reason <> 'missing')::bigint AS wanted,
        COUNT(*) FILTER (WHERE fulfilled_at IS NULL AND reason = 'missing')::bigint  AS missing,