Add defensible orphaned audio detection

serato_doctor/health.py

@@ -36,9 +36,13 @@ def analyze_health(library: Library) -> HealthReport:
         for group in duplicate_groups
         if group.kind is DuplicateKind.CLOUD_CONFLICT
     ]
-    referenced_names = {reference.filename for reference in library.references}
+    referenced_names = {
+        normalize(reference.filename) for reference in library.references
+    }
     unused_count = sum(
-        1 for track in library.tracks if track.filename not in referenced_names
+        1
+        for track in library.tracks
+        if normalize(track.filename) not in referenced_names
     )
 
     matcher = MatchingEngine(library.tracks)
@@ -73,6 +77,15 @@ def analyze_health(library: Library) -> HealthReport:
             group.extra_files for group in cloud_conflicts
         ),
         unused_tracks=unused_count,
+        orphan_candidates=(
+            sum(
+                normalize(track.filename) not in referenced_names
+                and normalize(track.filename) not in database_names
+                for track in library.tracks
+            )
+            if library.database
+            else None
+        ),
         suggested_matches=suggested_count,
         broken_symlinks=len(library.broken_symlinks),
         static_crates=sum(