refactor(worker): remove MessageParser (replaced by StreamAnalyzer)

src/ClaudeDo.Ui/Views/ListEditorView.axaml

@@ -12,8 +12,10 @@
         <TextBox Text="{Binding Name}" PlaceholderText="List name..."/>
 
         <TextBlock Text="Working Directory" FontWeight="SemiBold"/>
-        <TextBox Text="{Binding WorkingDir}" PlaceholderText="(optional) Absolute path to git repo"/>
-        <!-- TODO: folder picker button using IStorageProvider -->
+        <DockPanel>
+            <Button DockPanel.Dock="Right" Content="Browse..." Click="OnBrowseFolder" Margin="8,0,0,0" VerticalAlignment="Center"/>
+            <TextBox Text="{Binding WorkingDir}" PlaceholderText="(optional) Absolute path to git repo"/>
+        </DockPanel>
 
         <TextBlock Text="Default Commit Type" FontWeight="SemiBold"/>
         <ComboBox ItemsSource="{Binding CommitTypes}"

src/ClaudeDo.Ui/Views/ListEditorView.axaml.cs

@@ -1,4 +1,9 @@
+using System;
+using System.IO;
 using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Platform.Storage;
+using ClaudeDo.Ui.ViewModels;
 
 namespace ClaudeDo.Ui.Views;
 
@@ -8,4 +13,28 @@ public partial class ListEditorView : Window
     {
         InitializeComponent();
     }
+
+    private async void OnBrowseFolder(object? sender, RoutedEventArgs e)
+    {
+        var vm = DataContext as ListEditorViewModel;
+        var startPath = !string.IsNullOrWhiteSpace(vm?.WorkingDir) && Directory.Exists(vm.WorkingDir)
+            ? vm.WorkingDir
+            : Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+
+        var startLocation = await StorageProvider.TryGetFolderFromPathAsync(new Uri(startPath));
+
+        var result = await StorageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions
+        {
+            Title = "Select Working Directory",
+            SuggestedStartLocation = startLocation,
+            AllowMultiple = false,
+        });
+
+        if (result.Count > 0)
+        {
+            var path = result[0].TryGetLocalPath();
+            if (path is not null && vm is not null)
+                vm.WorkingDir = path;
+        }
+    }
 }