feat: expand and collapse all buttons

src/Resources/Locales/en_US.axaml

@@ -708,12 +708,14 @@
   <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">Run `git gc` command for this repository.</x:String>
   <x:String x:Key="Text.Repository.ClearAllCommitsFilter" xml:space="preserve">Clear all</x:String>
   <x:String x:Key="Text.Repository.ClearStashes" xml:space="preserve">Clear</x:String>
+  <x:String x:Key="Text.Repository.CollapseAll" xml:space="preserve">Collapse All</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">Configure this repository</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">CONTINUE</x:String>
   <x:String x:Key="Text.Repository.CustomActions" xml:space="preserve">Custom Actions</x:String>
   <x:String x:Key="Text.Repository.CustomActions.Empty" xml:space="preserve">No Custom Actions</x:String>
   <x:String x:Key="Text.Repository.Dashboard" xml:space="preserve">Dashboard</x:String>
   <x:String x:Key="Text.Repository.DiscardAll" xml:space="preserve">Discard all changes</x:String>
+  <x:String x:Key="Text.Repository.ExpandAll" xml:space="preserve">Expand All</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">Open in File Browser</x:String>
   <x:String x:Key="Text.Repository.Filter" xml:space="preserve">Search Branches/Tags/Submodules</x:String>
   <x:String x:Key="Text.Repository.FilterCommits" xml:space="preserve">Visibility in Graph</x:String>

src/Resources/Locales/es_ES.axaml

@@ -703,12 +703,14 @@
   <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">Ejecutar comando `git gc` para este repositorio.</x:String>
   <x:String x:Key="Text.Repository.ClearAllCommitsFilter" xml:space="preserve">Limpiar todo</x:String>
   <x:String x:Key="Text.Repository.ClearStashes" xml:space="preserve">Limpiar</x:String>
+  <x:String x:Key="Text.Repository.CollapseAll" xml:space="preserve">Contraer Todo</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">Configurar este repositorio</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">CONTINUAR</x:String>
   <x:String x:Key="Text.Repository.CustomActions" xml:space="preserve">Acciones Personalizadas</x:String>
   <x:String x:Key="Text.Repository.CustomActions.Empty" xml:space="preserve">No hay ninguna Acción Personalizada</x:String>
   <x:String x:Key="Text.Repository.Dashboard" xml:space="preserve">Dashboard</x:String>
   <x:String x:Key="Text.Repository.DiscardAll" xml:space="preserve">Descartar todos los cambios</x:String>
+  <x:String x:Key="Text.Repository.ExpandAll" xml:space="preserve">Expandir Todo</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">Abrir en el Explorador</x:String>
   <x:String x:Key="Text.Repository.Filter" xml:space="preserve">Buscar Ramas/Etiquetas/Submódulos</x:String>
   <x:String x:Key="Text.Repository.FilterCommits" xml:space="preserve">Visibilidad en el Gráfico</x:String>

src/Resources/Locales/fr_FR.axaml

@@ -688,12 +688,14 @@
   <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">Lancer `git gc` pour ce repository.</x:String>
   <x:String x:Key="Text.Repository.ClearAllCommitsFilter" xml:space="preserve">Tout effacer</x:String>
   <x:String x:Key="Text.Repository.ClearStashes" xml:space="preserve">Nettoyer</x:String>
+  <x:String x:Key="Text.Repository.CollapseAll" xml:space="preserve">Tout Réduire</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">Configurer ce repository</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">CONTINUER</x:String>
   <x:String x:Key="Text.Repository.CustomActions" xml:space="preserve">Actions personnalisées</x:String>
   <x:String x:Key="Text.Repository.CustomActions.Empty" xml:space="preserve">Pas d'actions personnalisées</x:String>
   <x:String x:Key="Text.Repository.Dashboard" xml:space="preserve">Tableau de bord</x:String>
   <x:String x:Key="Text.Repository.DiscardAll" xml:space="preserve">Rejeter tous les changements</x:String>
+  <x:String x:Key="Text.Repository.ExpandAll" xml:space="preserve">Tout Développer</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">Ouvrir dans l'explorateur de fichiers</x:String>
   <x:String x:Key="Text.Repository.Filter" xml:space="preserve">Rechercher Branches/Tags/Submodules</x:String>
   <x:String x:Key="Text.Repository.FilterCommits" xml:space="preserve">Visibilité dans le graphique</x:String>

src/Resources/Locales/it_IT.axaml

@@ -642,12 +642,14 @@
   <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">Esegui il comando `git gc` per questo repository.</x:String>
   <x:String x:Key="Text.Repository.ClearAllCommitsFilter" xml:space="preserve">Cancella tutto</x:String>
   <x:String x:Key="Text.Repository.ClearStashes" xml:space="preserve">Cancella</x:String>
+  <x:String x:Key="Text.Repository.CollapseAll" xml:space="preserve">Comprimi Tutto</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">Configura questo repository</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">CONTINUA</x:String>
   <x:String x:Key="Text.Repository.CustomActions" xml:space="preserve">Azioni Personalizzate</x:String>
   <x:String x:Key="Text.Repository.CustomActions.Empty" xml:space="preserve">Nessuna Azione Personalizzata</x:String>
   <x:String x:Key="Text.Repository.Dashboard" xml:space="preserve">Dashboard</x:String>
   <x:String x:Key="Text.Repository.DiscardAll" xml:space="preserve">Scarta tutte le modifiche</x:String>
+  <x:String x:Key="Text.Repository.ExpandAll" xml:space="preserve">Espandi Tutto</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">Apri nell'Esplora File</x:String>
   <x:String x:Key="Text.Repository.Filter" xml:space="preserve">Cerca Branch/Tag/Sottomodulo</x:String>
   <x:String x:Key="Text.Repository.FilterCommits" xml:space="preserve">Visibilità nel grafico</x:String>

src/Views/BranchTree.axaml.cs

@@ -387,6 +387,84 @@ public void ToggleNodeIsExpanded(ViewModels.BranchTreeNode node)
             _disableSelectionChangingEvent = false;
         }
 
+        public void ExpandAll()
+        {
+            if (Nodes == null || Nodes.Count == 0)
+                return;
+
+            _disableSelectionChangingEvent = true;
+
+            // Set IsExpanded = true on all folder nodes recursively
+            SetExpandedRecursive(Nodes, true);
+
+            // Rebuild rows
+            var rows = Rows;
+            rows.Clear();
+            var newRows = new List<ViewModels.BranchTreeNode>();
+            MakeRows(newRows, Nodes, 0);
+            rows.AddRange(newRows);
+
+            // Persist state for all nodes
+            var repo = DataContext as ViewModels.Repository;
+            if (repo != null)
+                PersistExpandedState(Nodes, repo);
+
+            RaiseEvent(new RoutedEventArgs(RowsChangedEvent));
+            _disableSelectionChangingEvent = false;
+        }
+
+        public void CollapseAll()
+        {
+            if (Nodes == null || Nodes.Count == 0)
+                return;
+
+            _disableSelectionChangingEvent = true;
+
+            // Set IsExpanded = false on all folder nodes recursively
+            SetExpandedRecursive(Nodes, false);
+
+            // Rebuild rows (only root nodes visible)
+            var rows = Rows;
+            rows.Clear();
+            var newRows = new List<ViewModels.BranchTreeNode>();
+            MakeRows(newRows, Nodes, 0);
+            rows.AddRange(newRows);
+
+            // Persist state for all nodes
+            var repo = DataContext as ViewModels.Repository;
+            if (repo != null)
+                PersistExpandedState(Nodes, repo);
+
+            RaiseEvent(new RoutedEventArgs(RowsChangedEvent));
+            _disableSelectionChangingEvent = false;
+        }
+
+        private void SetExpandedRecursive(List<ViewModels.BranchTreeNode> nodes, bool expanded)
+        {
+            foreach (var node in nodes)
+            {
+                // Only set IsExpanded for folder nodes (not branch leaves)
+                if (node.Backend is not Models.Branch)
+                    node.IsExpanded = expanded;
+
+                // Recurse into children
+                if (node.Children != null && node.Children.Count > 0)
+                    SetExpandedRecursive(node.Children, expanded);
+            }
+        }
+
+        private void PersistExpandedState(List<ViewModels.BranchTreeNode> nodes, ViewModels.Repository repo)
+        {
+            foreach (var node in nodes)
+            {
+                if (node.Backend is not Models.Branch)
+                    repo.UpdateBranchNodeIsExpanded(node);
+
+                if (node.Children != null && node.Children.Count > 0)
+                    PersistExpandedState(node.Children, repo);
+            }
+        }
+
         protected override void OnSizeChanged(SizeChangedEventArgs e)
         {
             base.OnSizeChanged(e);

src/Views/Repository.axaml

@@ -192,36 +192,60 @@
         </Border>
 
         <!-- Filter Branches/Tags/Submodules -->
-        <TextBox Grid.Row="1"
-                 Height="26"
-                 Margin="8,6,4,0"
-                 BorderThickness="1"
-                 CornerRadius="4"
-                 BorderBrush="{DynamicResource Brush.Border2}"
-                 Watermark="{DynamicResource Text.Repository.Filter}"
-                 Text="{Binding Filter, Mode=TwoWay}"
-                 VerticalContentAlignment="Center">
-          <TextBox.InnerLeftContent>
-            <Path Width="14" Height="14"
-                  Margin="6,0,0,0"
-                  Fill="{DynamicResource Brush.FG2}"
-                  Data="{StaticResource Icons.Search}"/>
-          </TextBox.InnerLeftContent>
-
-          <TextBox.InnerRightContent>
-            <Button Classes="icon_button"
-                    Width="16"
-                    Margin="0,0,6,0"
-                    Command="{Binding ClearFilter}"
-                    IsVisible="{Binding Filter, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"
-                    HorizontalAlignment="Right">
+        <Grid Grid.Row="1" Height="26" Margin="8,6,4,0" ColumnDefinitions="*,Auto,Auto">
+          <TextBox Grid.Column="0"
+                   BorderThickness="1"
+                   CornerRadius="4"
+                   BorderBrush="{DynamicResource Brush.Border2}"
+                   Watermark="{DynamicResource Text.Repository.Filter}"
+                   Text="{Binding Filter, Mode=TwoWay}"
+                   VerticalContentAlignment="Center">
+            <TextBox.InnerLeftContent>
               <Path Width="14" Height="14"
-                    Margin="0,1,0,0"
-                    Fill="{DynamicResource Brush.FG1}"
-                    Data="{StaticResource Icons.Clear}"/>
-            </Button>
-          </TextBox.InnerRightContent>
-        </TextBox>
+                    Margin="6,0,0,0"
+                    Fill="{DynamicResource Brush.FG2}"
+                    Data="{StaticResource Icons.Search}"/>
+            </TextBox.InnerLeftContent>
+
+            <TextBox.InnerRightContent>
+              <Button Classes="icon_button"
+                      Width="16"
+                      Margin="0,0,6,0"
+                      Command="{Binding ClearFilter}"
+                      IsVisible="{Binding Filter, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"
+                      HorizontalAlignment="Right">
+                <Path Width="14" Height="14"
+                      Margin="0,1,0,0"
+                      Fill="{DynamicResource Brush.FG1}"
+                      Data="{StaticResource Icons.Clear}"/>
+              </Button>
+            </TextBox.InnerRightContent>
+          </TextBox>
+
+          <!-- Expand All Button -->
+          <Button Grid.Column="1"
+                  Classes="icon_button"
+                  Width="14"
+                  Margin="4,0,0,0"
+                  Click="OnExpandAllNodes"
+                  ToolTip.Tip="{DynamicResource Text.Repository.ExpandAll}">
+            <Path Width="12" Height="12"
+                  Fill="{DynamicResource Brush.FG1}"
+                  Data="{StaticResource Icons.DoubleDown}"/>
+          </Button>
+
+          <!-- Collapse All Button -->
+          <Button Grid.Column="2"
+                  Classes="icon_button"
+                  Width="14"
+                  Margin="4,0,0,0"
+                  Click="OnCollapseAllNodes"
+                  ToolTip.Tip="{DynamicResource Text.Repository.CollapseAll}">
+            <Path Width="12" Height="12"
+                  Fill="{DynamicResource Brush.FG1}"
+                  Data="{StaticResource Icons.DoubleUp}"/>
+          </Button>
+        </Grid>
 
         <Grid Grid.Row="2" x:Name="LeftSidebarGroups" Margin="0,4,0,0" RowDefinitions="28,Auto,28,Auto,28,Auto,28,Auto,28,Auto" SizeChanged="OnLeftSidebarSizeChanged">
           <!-- Local Branches -->

src/Views/Repository.axaml.cs

@@ -598,5 +598,41 @@ private async void OnBisectCommand(object sender, RoutedEventArgs e)
 
             e.Handled = true;
         }
+
+        private void OnExpandAllNodes(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is ViewModels.Repository repo)
+            {
+                repo.IsLocalBranchGroupExpanded = true;
+                repo.IsRemoteGroupExpanded = true;
+                repo.IsTagGroupExpanded = true;
+                repo.IsSubmoduleGroupExpanded = true;
+                repo.IsWorktreeGroupExpanded = true;
+            }
+
+            LocalBranchTree?.ExpandAll();
+            RemoteBranchTree?.ExpandAll();
+            TagsList?.ExpandAll();
+            SubmoduleList?.ExpandAll();
+            e.Handled = true;
+        }
+
+        private void OnCollapseAllNodes(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is ViewModels.Repository repo)
+            {
+                repo.IsLocalBranchGroupExpanded = false;
+                repo.IsRemoteGroupExpanded = false;
+                repo.IsTagGroupExpanded = false;
+                repo.IsSubmoduleGroupExpanded = false;
+                repo.IsWorktreeGroupExpanded = false;
+            }
+
+            LocalBranchTree?.CollapseAll();
+            RemoteBranchTree?.CollapseAll();
+            TagsList?.CollapseAll();
+            SubmoduleList?.CollapseAll();
+            e.Handled = true;
+        }
     }
 }

src/Views/SubmodulesView.axaml.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 
 using Avalonia;
 using Avalonia.Controls;
@@ -118,6 +119,61 @@ public void ToggleNodeIsExpanded(ViewModels.SubmoduleTreeNode node)
             }
         }
 
+        public void ExpandAll()
+        {
+            if (Content is ViewModels.SubmoduleCollectionAsTree tree)
+            {
+                SetExpandedRecursive(tree.Tree, true);
+
+                // Rebuild rows manually
+                tree.Rows.Clear();
+                MakeTreeRows(tree.Rows, tree.Tree);
+
+                Rows = tree.Rows.Count;
+                RaiseEvent(new RoutedEventArgs(RowsChangedEvent));
+            }
+        }
+
+        public void CollapseAll()
+        {
+            if (Content is ViewModels.SubmoduleCollectionAsTree tree)
+            {
+                SetExpandedRecursive(tree.Tree, false);
+
+                // Rebuild rows manually
+                tree.Rows.Clear();
+                MakeTreeRows(tree.Rows, tree.Tree);
+
+                Rows = tree.Rows.Count;
+                RaiseEvent(new RoutedEventArgs(RowsChangedEvent));
+            }
+        }
+
+        private void MakeTreeRows(Avalonia.Collections.AvaloniaList<ViewModels.SubmoduleTreeNode> rows, List<ViewModels.SubmoduleTreeNode> nodes)
+        {
+            foreach (var node in nodes)
+            {
+                rows.Add(node);
+
+                if (!node.IsExpanded || !node.IsFolder)
+                    continue;
+
+                MakeTreeRows(rows, node.Children);
+            }
+        }
+
+        private void SetExpandedRecursive(List<ViewModels.SubmoduleTreeNode> nodes, bool expanded)
+        {
+            foreach (var node in nodes)
+            {
+                if (node.IsFolder)
+                    node.IsExpanded = expanded;
+
+                if (node.Children != null && node.Children.Count > 0)
+                    SetExpandedRecursive(node.Children, expanded);
+            }
+        }
+
         protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
         {
             base.OnPropertyChanged(change);