style(dart): apply pinned formatter to existing files

Normalize three existing formatting differences with the pinned Dart formatter. No behavior changes.

lib/services/downloaded_embedded_cover_resolver.dart

@@ -87,7 +87,8 @@ class DownloadedEmbeddedCoverResolver {
   static bool _drainScheduled = false;
   static final Map<String, int> _cacheGeneration = <String, int>{};
   static final Set<String> _pendingRefresh = <String>{};
-  static final _pendingPreviewValidation = <String, _PendingPreviewValidation>{};
+  static final _pendingPreviewValidation =
+      <String, _PendingPreviewValidation>{};
   static Future<void>? _previewValidationFuture;
   static const _previewValidationInterval = Duration(seconds: 5);
   static const _previewValidationBatchSize = 8;

test/batch_album_artist_normalization_test.dart

@@ -47,14 +47,11 @@ void main() {
       normalized.map((track) => track.albumArtist),
       everyElement('Falling In Reverse'),
     );
-    expect(
-      normalized.map((track) => track.artistName),
-      <String>[
-        'Falling In Reverse',
-        'Falling In Reverse, Jelly Roll',
-        'Falling In Reverse, Marilyn Manson',
-      ],
-    );
+    expect(normalized.map((track) => track.artistName), <String>[
+      'Falling In Reverse',
+      'Falling In Reverse, Jelly Roll',
+      'Falling In Reverse, Marilyn Manson',
+    ]);
   });
 
   test('preserves a stable joint album credit', () {

test/models_and_utils_test.dart

@@ -296,26 +296,32 @@ void main() {
       );
     });
 
-    test('waits on one progress delta stream and preserves concurrent items', () {
-      expect(
-        RegExp(
-          r'Gobackend\.waitForAllDownloadProgressDelta\(',
-        ).allMatches(workerSnapshotSource),
-        hasLength(1),
-      );
-      expect(
-        workerSnapshotSource,
-        isNot(contains('Gobackend.getAllDownloadProgress()')),
-      );
-      expect(workerSnapshotSource, contains('"item_deltas"'));
-      expect(
-        workerSnapshotSource,
-        contains('progressItemIds = orderedItemIds'),
-      );
-      expect(workerSnapshotSource, contains('progressCoordinatorEpoch'));
-      expect(workerSnapshotSource, contains('nativeWorkerProgressEpoch.get()'));
-      expect(nativeWorkerProviderSource, contains("snapshot['item_deltas']"));
-    });
+    test(
+      'waits on one progress delta stream and preserves concurrent items',
+      () {
+        expect(
+          RegExp(
+            r'Gobackend\.waitForAllDownloadProgressDelta\(',
+          ).allMatches(workerSnapshotSource),
+          hasLength(1),
+        );
+        expect(
+          workerSnapshotSource,
+          isNot(contains('Gobackend.getAllDownloadProgress()')),
+        );
+        expect(workerSnapshotSource, contains('"item_deltas"'));
+        expect(
+          workerSnapshotSource,
+          contains('progressItemIds = orderedItemIds'),
+        );
+        expect(workerSnapshotSource, contains('progressCoordinatorEpoch'));
+        expect(
+          workerSnapshotSource,
+          contains('nativeWorkerProgressEpoch.get()'),
+        );
+        expect(nativeWorkerProviderSource, contains("snapshot['item_deltas']"));
+      },
+    );
 
     Set<String> historyTableColumns(String source) {
       final match = RegExp(