Add broken symlink diagnostics

tests/test_health.py

@@ -2,6 +2,7 @@ from pathlib import Path
 
 from serato_doctor.health import analyze_health
 from serato_doctor.models.crate import Crate, CrateKind
+from serato_doctor.models.filesystem import BrokenSymlink
 from serato_doctor.models.library import Library
 from serato_doctor.models.reference import TrackReference
 from serato_doctor.models.track import DiskTrack
@@ -104,3 +105,16 @@ def test_health_reports_cloud_conflicts_separately_from_exact_duplicates():
     assert report.duplicate_files == 1
     assert report.suspected_cloud_conflict_groups == 1
     assert report.suspected_cloud_conflict_files == 1
+
+
+def test_health_reports_broken_symlinks_without_changing_score():
+    library = Library.build(
+        [reference("Found.mp3")],
+        [track("Found.mp3")],
+        [BrokenSymlink(Path("/music/Broken.mp3"), Path("missing.mp3"))],
+    )
+
+    report = analyze_health(library)
+
+    assert report.score == 100.0
+    assert report.broken_symlinks == 1