chore: trim redundant comments

lib/widgets/animation_utils.dart

@@ -474,12 +474,9 @@ class GridSkeleton extends StatelessWidget {
   }
 }
 
-/// Artist screen skeleton – shown *below* the SliverAppBar header while the
-/// discography loads. Renders a cover placeholder (only when the header image
-/// isn't available yet), the "Popular" section (rank + cover 48x48 + title +
-/// badge + trailing), and the horizontal album sections. The artist name and
-/// listeners are intentionally omitted here since the header already shows them
-/// overlaid on the cover.
+/// Artist screen skeleton shown below the SliverAppBar header while the
+/// discography loads: optional cover placeholder, "Popular" section, and the
+/// horizontal album sections.
 class ArtistScreenSkeleton extends StatelessWidget {
   final int popularCount;
   final int albumCount;

lib/widgets/batch_convert_sheet.dart

@@ -4,22 +4,12 @@ import 'package:spotiflac_android/utils/audio_conversion_utils.dart';
 import 'package:spotiflac_android/widgets/settings_group.dart';
 
 /// Modern, card-based batch convert sheet shared by the queue and album
-/// screens. It mirrors the single-track convert sheet styling so format and
-/// bitrate selection look consistent across the app.
+/// screens, matching the single-track convert sheet styling.
 class BatchConvertSheet extends StatefulWidget {
-  /// Available target formats.
   final List<String> formats;
-
-  /// Sheet title.
   final String title;
-
-  /// Optional subtitle shown under the title (e.g. number of tracks).
   final String? subtitle;
-
-  /// Label for the primary action button.
   final String confirmLabel;
-
-  /// Called with the selected format and bitrate when the user confirms.
   final void Function(String format, String bitrate) onConvert;
 
   const BatchConvertSheet({