feat(library): highlight high-bitrate quality badges

lib/screens/queue_tab.dart

@@ -9,6 +9,7 @@ import 'package:spotiflac_android/services/platform_bridge.dart';
 import 'package:spotiflac_android/l10n/l10n.dart';
 import 'package:spotiflac_android/utils/adaptive_layout.dart';
 import 'package:spotiflac_android/utils/app_bar_layout.dart';
+import 'package:spotiflac_android/utils/audio_quality_badge_policy.dart';
 import 'package:spotiflac_android/utils/nav_bar_inset.dart';
 import 'package:spotiflac_android/utils/re_enrich_release_policy.dart';
 import 'package:spotiflac_android/widgets/settings_group.dart';

lib/screens/queue_tab_collection_items.dart

@@ -336,11 +336,11 @@ extension _QueueTabCollectionItemWidgets on _QueueTabState {
     String quality, {
     bool listStyle = false,
   }) {
-    final isHighResolution = quality.startsWith('24');
+    final isHighlightedQuality = shouldHighlightAudioQualityBadge(quality);
     return Container(
       padding: EdgeInsets.symmetric(horizontal: listStyle ? 6 : 4, vertical: 2),
       decoration: BoxDecoration(
-        color: isHighResolution
+        color: isHighlightedQuality
             ? listStyle
                   ? colorScheme.primaryContainer
                   : colorScheme.primary
@@ -350,7 +350,7 @@ extension _QueueTabCollectionItemWidgets on _QueueTabState {
       child: Text(
         listStyle ? quality : _getQualityBadgeText(quality),
         style: Theme.of(context).textTheme.labelSmall?.copyWith(
-          color: isHighResolution
+          color: isHighlightedQuality
               ? listStyle
                     ? colorScheme.onPrimaryContainer
                     : colorScheme.onPrimary

lib/utils/audio_quality_badge_policy.dart

@@ -0,0 +1,24 @@
+const highQualityBadgeBitrateThresholdKbps = 900;
+
+/// Preserves the highlighted color used by legacy 24-bit Library badges while
+/// also supporting newer labels that display a measured bitrate instead.
+bool shouldHighlightAudioQualityBadge(String quality) {
+  final normalized = quality.trim().toLowerCase();
+  if (RegExp(r'\b24(?:\s*[- ]?\s*bit|/)').hasMatch(normalized)) {
+    return true;
+  }
+
+  final kbpsMatch = RegExp(
+    r'\b(\d+(?:\.\d+)?)\s*k(?:bps)?\b',
+  ).firstMatch(normalized);
+  final kbps = double.tryParse(kbpsMatch?.group(1) ?? '');
+  if (kbps != null) {
+    return kbps > highQualityBadgeBitrateThresholdKbps;
+  }
+
+  final mbpsMatch = RegExp(
+    r'\b(\d+(?:\.\d+)?)\s*mbps\b',
+  ).firstMatch(normalized);
+  final mbps = double.tryParse(mbpsMatch?.group(1) ?? '');
+  return mbps != null && mbps * 1000 > highQualityBadgeBitrateThresholdKbps;
+}

test/audio_quality_badge_policy_test.dart

@@ -0,0 +1,25 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:spotiflac_android/utils/audio_quality_badge_policy.dart';
+
+void main() {
+  group('Library audio quality badge color', () {
+    test('keeps legacy 24-bit labels highlighted', () {
+      expect(shouldHighlightAudioQualityBadge('24-bit/96kHz'), isTrue);
+      expect(shouldHighlightAudioQualityBadge('FLAC 24bit-48kHz'), isTrue);
+      expect(shouldHighlightAudioQualityBadge('24/192kHz'), isTrue);
+    });
+
+    test('highlights only measured bitrates above 900 kbps', () {
+      expect(shouldHighlightAudioQualityBadge('900kbps'), isFalse);
+      expect(shouldHighlightAudioQualityBadge('901kbps'), isTrue);
+      expect(shouldHighlightAudioQualityBadge('FLAC 1760 kbps'), isTrue);
+      expect(shouldHighlightAudioQualityBadge('1.76 Mbps'), isTrue);
+    });
+
+    test('leaves normal lossy bitrate labels neutral', () {
+      expect(shouldHighlightAudioQualityBadge('AAC 320kbps'), isFalse);
+      expect(shouldHighlightAudioQualityBadge('OPUS 256k'), isFalse);
+      expect(shouldHighlightAudioQualityBadge('16-bit/44.1kHz'), isFalse);
+    });
+  });
+}