fix(library): preserve album view when returning from detail screens

lib/screens/main_shell.dart

@@ -860,7 +860,10 @@ class _MainShellState extends ConsumerState<MainShell>
         navigatorKey: _libraryTabNavigatorKey,
         observers: [_libraryPreviewStopObserver],
         heroAnimationsEnabled: heroAnimationsEnabled,
-        child: _LibraryTabRoot(parentPageController: _pageController),
+        child: _LibraryTabRoot(
+          parentPageController: _pageController,
+          isTabActive: _currentIndex == 1,
+        ),
       ),
       if (showStore)
         _TabNavigator(
@@ -1232,8 +1235,12 @@ class _PreviewStopNavigatorObserver extends NavigatorObserver {
 
 class _LibraryTabRoot extends ConsumerWidget {
   final PageController parentPageController;
+  final bool isTabActive;
 
-  const _LibraryTabRoot({required this.parentPageController});
+  const _LibraryTabRoot({
+    required this.parentPageController,
+    required this.isTabActive,
+  });
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
@@ -1241,6 +1248,7 @@ class _LibraryTabRoot extends ConsumerWidget {
       settingsProvider.select((s) => s.showExtensionStore),
     );
     return QueueTab(
+      isTabActive: isTabActive,
       parentPageController: parentPageController,
       parentPageIndex: 1,
       nextPageIndex: showStore ? 2 : 3,

lib/screens/queue_tab.dart

@@ -211,6 +211,7 @@ DownloadHistoryItem? _historyItemForCompletionBridge(
 
 class QueueTab extends ConsumerStatefulWidget {
   final String? librarySection;
+  final bool isTabActive;
   final PageController? parentPageController;
   final int parentPageIndex;
   final int? nextPageIndex;
@@ -218,6 +219,7 @@ class QueueTab extends ConsumerStatefulWidget {
   const QueueTab({
     super.key,
     this.librarySection,
+    this.isTabActive = true,
     this.parentPageController,
     this.parentPageIndex = 1,
     this.nextPageIndex,
@@ -364,7 +366,9 @@ class _QueueTabState extends ConsumerState<QueueTab> {
   /// configured, jump the filter pager to it.
   void _applyDefaultLibraryViewOnTabVisible() {
     if (widget.librarySection != null) return;
-    final isVisible = TickerMode.valuesOf(context).enabled;
+    // Route transitions also disable TickerMode. Only a shell tab change
+    // should reset the user's current album/single view.
+    final isVisible = widget.isTabActive;
     final becameVisible = isVisible && !_wasTabVisible;
     _wasTabVisible = isVisible;
     if (!becameVisible) return;

test/album_completeness_query_test.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
@@ -92,7 +93,8 @@ print(json.dumps([dict(row) for row in db.execute(data['sql'], data['args'])]))
 
 class _Settings extends SettingsNotifier {
   @override
-  AppSettings build() => const AppSettings(localLibraryEnabled: true);
+  AppSettings build() =>
+      const AppSettings(localLibraryEnabled: true, defaultLibraryView: 'all');
 
   @override
   void setHistoryFilterMode(String mode) {
@@ -287,6 +289,8 @@ void main() {
       tester.view.physicalSize = const Size(800, 1400);
       tester.view.devicePixelRatio = 1;
       addTearDown(tester.view.reset);
+      final tabActive = ValueNotifier(true);
+      addTearDown(tabActive.dispose);
       await tester.pumpWidget(
         ProviderScope(
           overrides: [
@@ -302,7 +306,15 @@ void main() {
             theme: AppTheme.light(),
             localizationsDelegates: AppLocalizations.localizationsDelegates,
             supportedLocales: AppLocalizations.supportedLocales,
-            home: const Scaffold(body: QueueTab()),
+            home: ValueListenableBuilder<bool>(
+              valueListenable: tabActive,
+              builder: (_, active, _) => Scaffold(
+                body: TickerMode(
+                  enabled: active,
+                  child: QueueTab(isTabActive: active),
+                ),
+              ),
+            ),
           ),
         ),
       );
@@ -327,6 +339,25 @@ void main() {
       );
       expect(container.read(settingsProvider).historyFilterMode, 'albums');
 
+      // Pushing an album/detail route disables the underlying route's ticker.
+      // Popping it must retain Albums rather than reapply the All default.
+      final navigator = Navigator.of(tester.element(find.byType(QueueTab)));
+      unawaited(
+        navigator.push<void>(
+          MaterialPageRoute<void>(
+            builder: (_) => const Scaffold(body: Text('Album details')),
+          ),
+        ),
+      );
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 400));
+      expect(find.text('Album details'), findsOneWidget);
+      navigator.pop();
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 400));
+      expect(container.read(settingsProvider).historyFilterMode, 'albums');
+      await _waitFor(tester, find.text('1/12'));
+
       await tester.enterText(find.byType(TextField), 'one-track');
       await tester.pump(const Duration(milliseconds: 400));
       await _waitFor(tester, find.text('1 album'));
@@ -350,6 +381,14 @@ void main() {
       await tester.pump(const Duration(milliseconds: 400));
       await _waitFor(tester, find.text('complete'));
       expect(find.text('1/12'), findsNothing);
+      expect(container.read(settingsProvider).historyFilterMode, 'albums');
+      // An actual shell-tab switch still applies the configured All default.
+      tabActive.value = false;
+      await tester.pump();
+      tabActive.value = true;
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 400));
+      expect(container.read(settingsProvider).historyFilterMode, 'all');
       expect(tester.takeException(), isNull);
       await tester.pumpWidget(const SizedBox());
       // Let any already-dispatched SQLite queries finish after provider disposal.