double tap previous tab

app/lib/features/geckoview/domain/repositories/tab.dart

@@ -27,6 +27,8 @@ part 'tab.g.dart';
 class TabRepository extends _$TabRepository {
   final _tabsService = GeckoTabService();
 
+  String? _previousTabId;
+
   Future<String> addTab({
     Uri? url,
     bool selectTab = true,
@@ -83,6 +85,14 @@ class TabRepository extends _$TabRepository {
     );
   }
 
+  Future<bool> selectPreviousTab() async {
+    if (_previousTabId != null) {
+      return selectTab(_previousTabId!);
+    }
+
+    return false;
+  }
+
   Future<bool> selectTab(String tabId) async {
     final containerId = await ref
         .read(tabDataRepositoryProvider.notifier)
@@ -227,6 +237,7 @@ class TabRepository extends _$TabRepository {
 
     ref.listen(selectedTabProvider, (previous, tabId) async {
       if (tabId != null) {
+        _previousTabId = previous;
         await db.tabDao.touchTab(tabId, timestamp: DateTime.now());
       }
     });

app/lib/features/geckoview/features/browser/presentation/widgets/browser_modules/bottom_app_bar.dart

@@ -118,6 +118,11 @@ class BrowserBottomAppBar extends HookConsumerWidget {
                       .show(ViewTabsSheet());
                 }
               },
+              onDoubleTap: () async {
+                await ref
+                    .read(tabRepositoryProvider.notifier)
+                    .selectPreviousTab();
+              },
               onLongPress: () {
                 if (tabMenuController.isOpen) {
                   tabMenuController.close();

app/lib/features/geckoview/features/browser/presentation/widgets/tabs_action_button.dart

@@ -4,12 +4,14 @@ import 'package:lensai/features/geckoview/domain/providers/tab_list.dart';
 
 class TabsActionButton extends HookConsumerWidget {
   final bool isActive;
-  final VoidCallback onTap;
+  final VoidCallback? onTap;
-  final VoidCallback onLongPress;
+  final VoidCallback? onDoubleTap;
+  final VoidCallback? onLongPress;
 
   const TabsActionButton({
-    required this.onTap,
+    this.onTap,
-    required this.onLongPress,
+    this.onDoubleTap,
+    this.onLongPress,
     this.isActive = false,
     super.key,
   });
@@ -24,6 +26,7 @@ class TabsActionButton extends HookConsumerWidget {
 
     return InkWell(
       onTap: onTap,
+      onDoubleTap: onDoubleTap,
       onLongPress: onLongPress,
       child: Padding(
         padding: const EdgeInsets.symmetric(horizontal: 8.0, vertical: 15.0),