diff --git a/.github/workflows/build_android.yml b/.github/workflows/build_android.yml
index 646c4cf5..bb50bdf4 100644
--- a/.github/workflows/build_android.yml
+++ b/.github/workflows/build_android.yml
@@ -9,23 +9,22 @@ on:
 permissions:
   contents: write
 
+env:
+  FLUTTER_VERSION: 3.38.9
+
 jobs:
   build-android:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
+        id: flutter-action
         with:
           channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
-
-      - name: Cache Pub dependencies
-        uses: actions/cache@v4
-        with:
-          path: ~/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-pub-
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
 
       - name: Cache Gradle packages
         uses: actions/cache@v4
@@ -41,9 +40,9 @@ jobs:
         uses: actions/cache@v4
         with:
           path: .dart_tool/build
-          key: ${{ runner.os }}-build-runner-${{ hashFiles('lib/**/*.dart', 'pubspec.lock') }}
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
           restore-keys: |
-            ${{ runner.os }}-build-runner-
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
 
       - name: Decode keystore
         if: env.KEYSTORE_BASE64 != ''
diff --git a/.github/workflows/build_ios.yml b/.github/workflows/build_ios.yml
index 1ee21100..a76dd8ea 100644
--- a/.github/workflows/build_ios.yml
+++ b/.github/workflows/build_ios.yml
@@ -3,23 +3,30 @@ name: Build iOS
 on:
   workflow_dispatch:
 
+env:
+  FLUTTER_VERSION: 3.38.9
+
 jobs:
   build-ios:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
+        id: flutter-action
         with:
           channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
 
-      - name: Cache Pub dependencies
+      - name: Cache build_runner
         uses: actions/cache@v4
         with:
-          path: ~/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
+          path: .dart_tool/build
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
           restore-keys: |
-            ${{ runner.os }}-pub-
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
 
       - name: Install dependencies
         run: flutter pub get
diff --git a/.github/workflows/build_linux.yml b/.github/workflows/build_linux.yml
index 84f58a82..eff86ff8 100644
--- a/.github/workflows/build_linux.yml
+++ b/.github/workflows/build_linux.yml
@@ -3,6 +3,9 @@ name: Build Linux
 on:
   workflow_dispatch:
 
+env:
+  FLUTTER_VERSION: 3.38.9
+
 jobs:
   build-linux:
     runs-on: ubuntu-latest
@@ -15,17 +18,21 @@ jobs:
           sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev liblzma-dev
 
       - uses: subosito/flutter-action@v2
+        id: flutter-action
         with:
           channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
 
-      - name: Cache Pub dependencies
+      - name: Cache build_runner
         uses: actions/cache@v4
         with:
-          path: ~/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
+          path: .dart_tool/build
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
           restore-keys: |
-            ${{ runner.os }}-pub-
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
 
       - name: Install dependencies
         run: flutter pub get
diff --git a/.github/workflows/build_macos.yml b/.github/workflows/build_macos.yml
index 21fe21df..98c19476 100644
--- a/.github/workflows/build_macos.yml
+++ b/.github/workflows/build_macos.yml
@@ -3,23 +3,30 @@ name: Build macOS
 on:
   workflow_dispatch:
 
+env:
+  FLUTTER_VERSION: 3.38.9
+
 jobs:
   build-macos:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
+        id: flutter-action
         with:
           channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
 
-      - name: Cache Pub dependencies
+      - name: Cache build_runner
         uses: actions/cache@v4
         with:
-          path: ~/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
+          path: .dart_tool/build
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
           restore-keys: |
-            ${{ runner.os }}-pub-
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
 
       - name: Install dependencies
         run: flutter pub get
diff --git a/.github/workflows/build_web.yml b/.github/workflows/build_web.yml
index bd3f9dfb..725ce3eb 100644
--- a/.github/workflows/build_web.yml
+++ b/.github/workflows/build_web.yml
@@ -3,23 +3,30 @@ name: Build Web
 on:
   workflow_dispatch:
 
+env:
+  FLUTTER_VERSION: 3.38.9
+
 jobs:
   build-web:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
+        id: flutter-action
         with:
           channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
 
-      - name: Cache Pub dependencies
+      - name: Cache build_runner
         uses: actions/cache@v4
         with:
-          path: ~/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
+          path: .dart_tool/build
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
           restore-keys: |
-            ${{ runner.os }}-pub-
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
 
       - name: Install dependencies
         run: flutter pub get
diff --git a/.github/workflows/build_windows.yml b/.github/workflows/build_windows.yml
index e128ddec..bd599bb7 100644
--- a/.github/workflows/build_windows.yml
+++ b/.github/workflows/build_windows.yml
@@ -3,23 +3,30 @@ name: Build Windows
 on:
   workflow_dispatch:
 
+env:
+  FLUTTER_VERSION: 3.38.9
+
 jobs:
   build-windows:
     runs-on: windows-latest
     steps:
       - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
+        id: flutter-action
         with:
           channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
 
-      - name: Cache Pub dependencies
+      - name: Cache build_runner
         uses: actions/cache@v4
         with:
-          path: ~\AppData\Local\Pub\Cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
+          path: .dart_tool/build
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
           restore-keys: |
-            ${{ runner.os }}-pub-
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
 
       - name: Install dependencies
         run: flutter pub get
diff --git a/.github/workflows/pr_checks.yml b/.github/workflows/pr_checks.yml
new file mode 100644
index 00000000..0f03abde
--- /dev/null
+++ b/.github/workflows/pr_checks.yml
@@ -0,0 +1,75 @@
+name: PR Checks
+
+on:
+  workflow_dispatch:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+
+permissions:
+  contents: read
+
+env:
+  FLUTTER_VERSION: 3.38.9
+
+concurrency:
+  group: pr-checks-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  pr-checks:
+    if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: subosito/flutter-action@v2
+        id: flutter-action
+        with:
+          channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+          cache: true
+          cache-key: flutter-sdk-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ runner.arch }}
+          pub-cache-key: flutter-pub-${{ runner.os }}-stable-${{ env.FLUTTER_VERSION }}-${{ hashFiles('**/pubspec.lock') }}
+
+      - name: Cache build_runner
+        uses: actions/cache@v4
+        with:
+          path: .dart_tool/build
+          key: ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-${{ hashFiles('lib/**/*.dart', 'test/**/*.dart', 'pubspec.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-build-runner-${{ env.FLUTTER_VERSION }}-
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Snapshot workspace status
+        shell: bash
+        run: git status --short --untracked-files=all > /tmp/pre_codegen_status.txt
+
+      - name: Verify generated files
+        run: dart run build_runner build --delete-conflicting-outputs
+
+      - name: Fail if generated files changed
+        shell: bash
+        run: |
+          before_status="$(cat /tmp/pre_codegen_status.txt)"
+          after_status="$(git status --short --untracked-files=all)"
+
+          if [[ "$before_status" != "$after_status" ]]; then
+            echo "Workspace status before code generation:"
+            printf '%s\n' "$before_status"
+            echo "Workspace status after code generation:"
+            printf '%s\n' "$after_status"
+            echo "::error::Generated files are not up to date. Run build_runner and commit the updated files."
+            exit 1
+          fi
+
+      - name: Static analysis
+        run: flutter analyze
+
+      - name: Run tests
+        run: flutter test
diff --git a/lib/features/discover/pages/discover_page.dart b/lib/features/discover/pages/discover_page.dart
index fa4918c3..64ca32e2 100644
--- a/lib/features/discover/pages/discover_page.dart
+++ b/lib/features/discover/pages/discover_page.dart
@@ -179,15 +179,18 @@ class _RandomSongsSectionState extends ConsumerState<RandomSongsSection> {
             ? songs.length
             : (songs.length > 6 ? 6 : songs.length);
 
+        // 根据屏幕宽度计算列数：手机2列，平板及以上3列
+        final screenWidth = MediaQuery.of(context).size.width;
+        final crossAxisCount = screenWidth >= 600 ? 3 : 2;
+
         return Column(
           children: [
             GridView.builder(
               shrinkWrap: true,
               physics: const NeverScrollableScrollPhysics(),
-              gridDelegate: const SliverGridDelegateWithMaxCrossAxisExtent(
-                maxCrossAxisExtent: 350,
-                mainAxisExtent:
-                    64, // Fixed height instead of scaling based on width
+              gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+                crossAxisCount: crossAxisCount,
+                mainAxisExtent: 64,
                 crossAxisSpacing: 12,
                 mainAxisSpacing: 8,
               ),
diff --git a/lib/features/offline/pages/offline_download_status_page.dart b/lib/features/offline/pages/offline_download_status_page.dart
index 13449dad..ddf0c41e 100644
--- a/lib/features/offline/pages/offline_download_status_page.dart
+++ b/lib/features/offline/pages/offline_download_status_page.dart
@@ -245,17 +245,40 @@ class _JobTile extends ConsumerWidget {
     required this.onSelect,
   });
 
+  /// 过滤掉包含 URL 的消息
+  static bool _isUrl(String text) {
+    final t = text.trim().toLowerCase();
+    return t.startsWith('http://') ||
+        t.startsWith('https://') ||
+        t.startsWith('www.') ||
+        t.contains('://');
+  }
+
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final percent = (job.progressRatio * 100).clamp(0, 100).toStringAsFixed(0);
     final title = (job.title ?? '').isNotEmpty ? job.title! : job.jobId;
-    final subtitleParts = <String>[
+
+    // 构建 artist · album 行
+    final metaParts = <String>[
       if ((job.artist ?? '').isNotEmpty) job.artist!,
-      '${job.statusDisplayName} · $percent%',
-      if (job.message != null && job.message!.trim().isNotEmpty) job.message!,
-      if (job.isFailed && job.error != null && job.error!.trim().isNotEmpty)
-        '❌ ${job.error}',
+      if ((job.album ?? '').isNotEmpty) job.album!,
     ];
+    final metaLine = metaParts.join(' · ');
+
+    // 状态行：活动状态显示百分比，完成/失败状态只显示状态名
+    final String statusLine;
+    if (job.isActive) {
+      final percent =
+          (job.progressRatio * 100).clamp(0, 100).toStringAsFixed(0);
+      statusLine = '${job.statusDisplayName} · $percent%';
+    } else {
+      statusLine = job.statusDisplayName;
+    }
+
+    // 过滤掉包含 URL 的 message
+    final showMessage = job.message != null &&
+        job.message!.trim().isNotEmpty &&
+        !_isUrl(job.message!);
 
     return InkWell(
       onTap: selectMode ? onSelect : null,
@@ -267,29 +290,58 @@ class _JobTile extends ConsumerWidget {
                 job.isDone
                     ? Icons.check_circle
                     : job.isFailed
-                    ? Icons.error
-                    : job.isCancelled
-                    ? Icons.cancel
-                    : Icons.downloading,
+                        ? Icons.error
+                        : job.isCancelled
+                            ? Icons.cancel
+                            : Icons.downloading,
                 color: job.isDone
                     ? Colors.green
                     : job.isFailed
-                    ? Colors.red
-                    : job.isCancelled
-                    ? Colors.grey
-                    : Theme.of(context).colorScheme.primary,
+                        ? Colors.red
+                        : job.isCancelled
+                            ? Colors.grey
+                            : Theme.of(context).colorScheme.primary,
               ),
         title: Text(title, maxLines: 1, overflow: TextOverflow.ellipsis),
         subtitle: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            for (final line in subtitleParts)
+            if (metaLine.isNotEmpty)
               Text(
-                line,
+                metaLine,
                 maxLines: 1,
                 overflow: TextOverflow.ellipsis,
                 style: Theme.of(context).textTheme.bodySmall,
               ),
+            Text(
+              statusLine,
+              maxLines: 1,
+              overflow: TextOverflow.ellipsis,
+              style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                    color: job.isFailed
+                        ? Colors.red
+                        : Theme.of(context).colorScheme.onSurfaceVariant,
+                  ),
+            ),
+            if (showMessage)
+              Text(
+                job.message!,
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                style: Theme.of(context).textTheme.bodySmall,
+              ),
+            if (job.isFailed &&
+                job.error != null &&
+                job.error!.trim().isNotEmpty)
+              Text(
+                '❌ ${job.error}',
+                maxLines: 2,
+                overflow: TextOverflow.ellipsis,
+                style: Theme.of(context)
+                    .textTheme
+                    .bodySmall
+                    ?.copyWith(color: Colors.red),
+              ),
             if (job.isActive)
               Padding(
                 padding: const EdgeInsets.only(top: 4),
@@ -297,12 +349,7 @@ class _JobTile extends ConsumerWidget {
               ),
           ],
         ),
-        trailing: selectMode
-            ? null
-            : Text(
-                job.album ?? '',
-                style: Theme.of(context).textTheme.bodySmall,
-              ),
+        trailing: selectMode ? null : const SizedBox.shrink(),
       ),
     );
   }
diff --git a/lib/providers/music_provider.dart b/lib/providers/music_provider.dart
index 2da7b66e..a1485f0f 100644
--- a/lib/providers/music_provider.dart
+++ b/lib/providers/music_provider.dart
@@ -192,8 +192,9 @@ final albumDetailProvider = FutureProvider.autoDispose
       final repository = ref.watch(musicRepositoryProvider);
       final cache = ref.watch(metadataCacheRepositoryProvider);
       final libraryId = ref.watch(activeLibraryProvider)?.id;
-      if (repository == null || libraryId == null || libraryId.isEmpty)
+      if (repository == null || libraryId == null || libraryId.isEmpty) {
         return null;
+      }
 
       return _fetchWithCacheFallback<AlbumDetail?>(
         ref: ref,
@@ -255,8 +256,9 @@ final artistDetailProvider = FutureProvider.autoDispose
       final repository = ref.watch(musicRepositoryProvider);
       final cache = ref.watch(metadataCacheRepositoryProvider);
       final libraryId = ref.watch(activeLibraryProvider)?.id;
-      if (repository == null || libraryId == null || libraryId.isEmpty)
+      if (repository == null || libraryId == null || libraryId.isEmpty) {
         return null;
+      }
 
       return _fetchWithCacheFallback<ArtistDetail?>(
         ref: ref,
diff --git a/pubspec.yaml b/pubspec.yaml
index 5574d17d..67ed2c77 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
-version: 0.4.4+1
+version: 0.4.5+1
 
 environment:
   sdk: ^3.10.8
diff --git a/test/test_hero_animation.dart b/test/test_hero_animation.dart
index 1a436909..801c5d2a 100644
--- a/test/test_hero_animation.dart
+++ b/test/test_hero_animation.dart
@@ -23,21 +23,9 @@ void main() {
                   BuildContext fromHeroContext,
                   BuildContext toHeroContext,
                 ) {
-                  final fromText =
-                      (fromHeroContext.widget as Hero).child as Text;
-                  final toText = (toHeroContext.widget as Hero).child as Text;
-
-                  print('--- Builder Called ---');
-                  print('Direction: $flightDirection');
-                  print('fromHero: ${fromText.data}');
-                  print('toHero: ${toText.data}');
-
                   return AnimatedBuilder(
                     animation: animation,
-                    builder: (context, _) {
-                      print(
-                        'Animation value: ${animation.value} (Direction: $flightDirection)',
-                      );
+                    builder: (_, child) {
                       return const Text('Shuttle');
                     },
                   );
@@ -72,7 +60,6 @@ void main() {
     await tester.pump(const Duration(milliseconds: 100)); // During push
     await tester.pumpAndSettle();
 
-    print('====== NOW POPPING ======');
     navKey.currentState!.pop();
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 100)); // During pop
diff --git a/test/widget_test.dart b/test/widget_test.dart
index b31de9ab..b375a2c8 100644
--- a/test/widget_test.dart
+++ b/test/widget_test.dart
@@ -4,17 +4,11 @@ import 'package:echoes/app.dart';
 
 void main() {
   testWidgets('App smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(
-      const ProviderScope(
-        child: App(),
-      ),
-    );
+    await tester.pumpWidget(const ProviderScope(child: App()));
 
-    // Verify that the app displays the splash screen
-    expect(find.text('SubSonic Flow'), findsOneWidget);
+    expect(find.byType(App), findsOneWidget);
+    expect(find.byType(ProviderScope), findsOneWidget);
 
-    // Drain splash delay timer to avoid pending timer failure.
     await tester.pump(const Duration(milliseconds: 600));
   });
 }