feat: add "fetch all repositories" action in workspace menu

src/Resources/Locales/en_US.axaml

@@ -1023,6 +1023,7 @@
   <x:String x:Key="Text.WorkingCopy.UseCommitTemplate" xml:space="preserve">Template: ${0}$</x:String>
   <x:String x:Key="Text.Workspace" xml:space="preserve">WORKSPACE: </x:String>
   <x:String x:Key="Text.Workspace.Configure" xml:space="preserve">Configure Workspaces...</x:String>
+  <x:String x:Key="Text.Workspace.FetchAllRepositories" xml:space="preserve">Fetch All Repositories</x:String>
   <x:String x:Key="Text.Worktree" xml:space="preserve">WORKTREE</x:String>
   <x:String x:Key="Text.Worktree.Branch" xml:space="preserve">BRANCH</x:String>
   <x:String x:Key="Text.Worktree.CopyPath" xml:space="preserve">Copy Path</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -1027,6 +1027,7 @@
   <x:String x:Key="Text.WorkingCopy.UseCommitTemplate" xml:space="preserve">模板：${0}$</x:String>
   <x:String x:Key="Text.Workspace" xml:space="preserve">工作区：</x:String>
   <x:String x:Key="Text.Workspace.Configure" xml:space="preserve">配置工作区...</x:String>
+  <x:String x:Key="Text.Workspace.FetchAllRepositories" xml:space="preserve">拉取工作区所有仓库</x:String>
   <x:String x:Key="Text.Worktree" xml:space="preserve">本地工作树</x:String>
   <x:String x:Key="Text.Worktree.Branch" xml:space="preserve">連結分支</x:String>
   <x:String x:Key="Text.Worktree.CopyPath" xml:space="preserve">复制工作树路径</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -1027,6 +1027,7 @@
   <x:String x:Key="Text.WorkingCopy.UseCommitTemplate" xml:space="preserve">範本: ${0}$</x:String>
   <x:String x:Key="Text.Workspace" xml:space="preserve">工作區: </x:String>
   <x:String x:Key="Text.Workspace.Configure" xml:space="preserve">設定工作區...</x:String>
+  <x:String x:Key="Text.Workspace.FetchAllRepositories" xml:space="preserve">提取工作區所有存放庫</x:String>
   <x:String x:Key="Text.Worktree" xml:space="preserve">本機工作區</x:String>
   <x:String x:Key="Text.Worktree.Branch" xml:space="preserve">分支</x:String>
   <x:String x:Key="Text.Worktree.CopyPath" xml:space="preserve">複製工作區路徑</x:String>

src/ViewModels/Launcher.cs

@@ -1,6 +1,8 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Text;
+using System.Threading.Tasks;
 
 using Avalonia.Collections;
 using Avalonia.Threading;
@@ -116,6 +118,26 @@ public void CloseAll()
             _ignoreIndexChange = false;
         }
 
+        public async Task FetchAllRepositoriesAsync()
+        {
+            // avoid collection was modified while enumerating.
+            var pages = new List<LauncherPage>();
+            pages.AddRange(Pages);
+
+            var count = 0;
+            foreach (var page in pages)
+            {
+                if (page.Data is Repository repo)
+                {
+                    if (await repo.FetchAllRemotesAsync())
+                        count++;
+                }
+            }
+
+            if (count > 0)
+                Models.Notification.Send(null, $"Fetched {count} repositories");
+        }
+
         public void SwitchWorkspace(Workspace to)
         {
             if (to == null || to.IsActive)

src/ViewModels/Repository.cs

@@ -675,6 +675,40 @@ public async Task FetchAsync(bool autoStart)
                 ShowPopup(new Fetch(this));
         }
 
+        public async Task<bool> FetchAllRemotesAsync()
+        {
+            if (IsAutoFetching)
+                return false;
+
+            CommandLog log = null;
+
+            try
+            {
+                var lockFile = Path.Combine(GitDir, "index.lock");
+                if (File.Exists(lockFile))
+                    return false;
+
+                if (_remotes.Count == 0)
+                    return false;
+
+                IsAutoFetching = true;
+                log = CreateLog("Fetch");
+
+                foreach (var remote in _remotes)
+                    await new Commands.Fetch(FullPath, remote.Name).Use(log).RunAsync();
+
+                _lastFetchTime = DateTime.Now;
+            }
+            catch
+            {
+                // Ignore all exceptions.
+            }
+
+            IsAutoFetching = false;
+            log?.Complete();
+            return true;
+        }
+
         public async Task PullAsync(bool autoStart)
         {
             if (IsBare || !CanCreatePopup())

src/Views/Launcher.axaml.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 
 using Avalonia;
 using Avalonia.Controls;
@@ -395,6 +396,19 @@ private void OnOpenWorkspaceMenu(object sender, RoutedEventArgs e)
 
                 menu.Items.Add(new MenuItem() { Header = "-" });
 
+                var hasRepos = launcher.Pages.Any(p => p.Data is ViewModels.Repository);
+
+                var fetchAll = new MenuItem();
+                fetchAll.Header = App.Text("Workspace.FetchAllRepositories");
+                fetchAll.Icon = this.CreateMenuIcon("Icons.Fetch");
+                fetchAll.IsEnabled = hasRepos;
+                fetchAll.Click += async (_, ev) =>
+                {
+                    await launcher.FetchAllRepositoriesAsync();
+                    ev.Handled = true;
+                };
+                menu.Items.Add(fetchAll);
+
                 var configure = new MenuItem();
                 configure.Header = App.Text("Workspace.Configure");
                 configure.Click += async (_, ev) =>