reindex-music: show discography count in the report

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/reindex-music.ts

@@ -28,6 +28,7 @@ type Report = {
   foldersScanned: number;
   tracksIndexed: number;
   coversSaved: number;
+  discographies: number;
   elapsedSec: number;
   error: string | null;
 };
@@ -67,6 +68,7 @@ function printReport(r: Report): void {
   l('Albums:', `${r.albums}  (${r.built} built, ${r.skipped} unchanged)`);
   l('Tracks:', `${r.tracksIndexed} indexed`);
   l('Covers:', `${r.coversSaved} compressed`);
+  l('Discogs:', `${r.discographies} artist${r.discographies === 1 ? '' : 's'}`);
   l('Folders:', `${r.foldersScanned} scanned`);
   l('Elapsed:', `${r.elapsedSec}s`);
   if (r.error) l('Error:', r.error);