A scene music post's 00- files go with its tracks

"[01/13] - "00-ammar-turk_uit_de_kroeg-single-web-nl-2022-cover.jpg"" with
"[05/13] - "01-ammar-turk_uit_de_kroeg.mp3"": the tracks are keyed by
artist and total (SCENE_TRACK), but the cover, nfo, sfv and m3u were releases
of their own (2,630 single files of Meow in a.b.ftn). Under a bare counter a
00- stem takes the same key.

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

lib/release/identity.ts

@@ -370,6 +370,11 @@ export function releaseIdentity(input: ReleaseInput): ReleaseIdentity | null {
   if (!tag && postTotal && isPostToken(remainder)) {
     return { key: hash('post', poster, remainder, postTotal), name: remainder, fileTotal, source: 'post' }
   }
+  // A scene music post's index files under a bare counter go with its tracks: the artist and the total ("[01/13] -
+  // "00-ammar-turk_uit_de_kroeg-single-web-nl-2022-cover.jpg"" with "[05/13] - "01-ammar-turk_uit_de_kroeg.mp3"": the
+  // cover, nfo, sfv and m3u of 2,600 Meow posts were releases of their own; LOG.md 2026-10-12 (28)).
+  const sceneIndex = postTotal && /^00[-_ .]/.test(stem) ? SCENE_TRACK.exec(stem) : null
+  if (sceneIndex) return { key: hash('stem', poster, sceneIndex[1], postTotal), name: sceneIndex[1], fileTotal, source: 'stem' }
   // An image without words around it: its set by its name (keyed as a stem, so "x.jpg" joins "x.part01.rar").
   // Keyed by its set when its name has one ("##[ "diana-040-001.jpg" (01/68)": all of a poster's 263 diana sets were
   // one release of 17,808 images; LOG.md 2026-10-12 (7)).