feat(albums): show formatted editorial descriptions

lib/utils/editorial_notes.dart

@@ -0,0 +1,30 @@
+import 'package:html/dom.dart';
+import 'package:html/parser.dart' as html;
+
+/// Editorial text is display-only. Never load embedded media or execute markup.
+DocumentFragment parseEditorialNotes(String value) {
+  final fragment = html.parseFragment(value);
+  for (final element in fragment.querySelectorAll(
+    'script, style, iframe, object, template',
+  )) {
+    element.remove();
+  }
+  return fragment;
+}
+
+String? albumDescriptionFromMetadata(Map<String, dynamic>? metadata) {
+  final notes =
+      metadata?['editorial_notes'] ??
+      metadata?['editorialNotes'] ??
+      metadata?['description'];
+  final candidates = notes is Map
+      ? [notes['standard'], notes['short']]
+      : [notes];
+  for (final candidate in candidates) {
+    if (candidate is String &&
+        (parseEditorialNotes(candidate).text ?? '').trim().isNotEmpty) {
+      return candidate.trim();
+    }
+  }
+  return null;
+}