fix: make album tagging best-effort per file

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

worker/lyra_worker/_mutagen.py

@@ -30,6 +30,7 @@ class MutagenTagger:
 
         names = os.listdir(album_dir)
         for old_name, new_name, title, number in plan_track_names(names, target.tracklist):
+            try:
                 path = os.path.join(album_dir, old_name)
                 audio = mutagen.File(path, easy=True)
                 if audio is None:  # unreadable/unsupported file — leave it untouched
@@ -46,3 +47,6 @@ class MutagenTagger:
                 new_path = os.path.join(album_dir, new_name)
                 if os.path.abspath(new_path) != os.path.abspath(path) and not os.path.exists(new_path):
                     os.rename(path, new_path)
+            except Exception as e:  # best-effort: one bad track must not block the rest of the album
+                print(f"tagger: failed to tag {old_name} in {album_dir}: {e}", flush=True)
+                continue