Add diagnostic drilldowns

tests/test_web.py

@@ -26,6 +26,10 @@ def test_web_analysis_uses_production_health_pipeline(tmp_path):
     assert result["database_missing_paths"] == 0
     assert result["database_missing_unique_filenames"] == 0
     assert result["tracks_missing_from_database"] == 0
+    assert result["details"]["old_crate_references"]["total"] == 2
+    assert result["details"]["old_crate_references"]["items"][0]["crate"]
+    assert result["details"]["suggested_matches"]["total"] == 0
+    assert result["details"]["unused_tracks"]["total"] == 1
 
 
 def test_web_analysis_rejects_missing_folders(tmp_path):
@@ -41,4 +45,7 @@ def test_web_static_assets_are_declared_and_packaged():
     html = (asset_root / "index.html").read_text(encoding="utf-8")
     assert "Missing tracks in Serato" in html
     assert "Old crate references" in html
+    assert "Choose a diagnostic" in html
+    assert 'data-detail="database_missing_tracks"' in html
+    assert 'data-detail="old_crate_references"' in html
     assert html.count('class="info-button"') >= 10