move SheepIt settings to global settings

Views/GlobalSettingsWindow.axaml

@@ -0,0 +1,29 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="using:UnifiedFarmLauncher.ViewModels"
+        x:Class="UnifiedFarmLauncher.Views.GlobalSettingsWindow"
+        x:DataType="vm:GlobalSettingsViewModel"
+        Title="Global Settings"
+        Width="500" Height="300"
+        MinWidth="400" MinHeight="250">
+    <Grid RowDefinitions="Auto,*,Auto" Margin="10">
+        <!-- Settings Content -->
+        <TabControl Grid.Row="1" Margin="0,10">
+            <TabItem Header="SheepIt">
+                <StackPanel Margin="10" Spacing="10">
+                    <TextBlock Text="Username:"/>
+                    <TextBox Name="SheepItUsernameTextBox" Text="{Binding SheepItUsername}"/>
+                    
+                    <TextBlock Text="Render Key:" Margin="0,10,0,0"/>
+                    <TextBox Name="SheepItRenderKeyTextBox" Text="{Binding SheepItRenderKey}" PasswordChar="*"/>
+                </StackPanel>
+            </TabItem>
+        </TabControl>
+
+        <!-- Buttons -->
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Grid.Row="2" Spacing="10" Margin="0,10,0,0">
+            <Button Name="OkButton" Content="OK" Width="80" IsDefault="True"/>
+            <Button Name="CancelButton" Content="Cancel" Width="80" IsCancel="True"/>
+        </StackPanel>
+    </Grid>
+</Window>

Views/GlobalSettingsWindow.axaml.cs

@@ -0,0 +1,61 @@
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using UnifiedFarmLauncher.Services;
+using UnifiedFarmLauncher.ViewModels;
+
+namespace UnifiedFarmLauncher.Views
+{
+    public partial class GlobalSettingsWindow : Window
+    {
+        private readonly GlobalSettingsViewModel _viewModel;
+        private bool _result;
+
+        public GlobalSettingsWindow()
+        {
+            InitializeComponent();
+            var configService = new ConfigService();
+            _viewModel = new GlobalSettingsViewModel(configService);
+            DataContext = _viewModel;
+            SetupEventHandlers();
+        }
+
+        private void InitializeComponent()
+        {
+            Avalonia.Markup.Xaml.AvaloniaXamlLoader.Load(this);
+        }
+
+        private void SetupEventHandlers()
+        {
+            this.FindControl<Button>("OkButton")!.Click += OkButton_Click;
+            this.FindControl<Button>("CancelButton")!.Click += CancelButton_Click;
+        }
+
+        private void OkButton_Click(object? sender, RoutedEventArgs e)
+        {
+            try
+            {
+                _viewModel.Save();
+                _result = true;
+                Close();
+            }
+            catch (System.Exception ex)
+            {
+                // Could show error message here
+                System.Diagnostics.Debug.WriteLine($"Failed to save global settings: {ex.Message}");
+            }
+        }
+
+        private void CancelButton_Click(object? sender, RoutedEventArgs e)
+        {
+            _result = false;
+            Close();
+        }
+
+        public async Task<bool> ShowDialogAsync(Window parent)
+        {
+            await base.ShowDialog(parent);
+            return _result;
+        }
+    }
+}

Views/MainWindow.axaml

@@ -17,6 +17,8 @@
             <Button Name="StartWorkerButton" Content="Start" Margin="5" Width="80"/>
             <Button Name="StopWorkerButton" Content="Stop" Margin="5" Width="80"/>
             <Button Name="AttachWorkerButton" Content="Attach" Margin="5" Width="80"/>
+            <Separator Margin="10,0"/>
+            <Button Name="SettingsButton" Content="Settings" Margin="5" Width="80"/>
         </StackPanel>
 
         <!-- Worker Type Filter -->

Views/MainWindow.axaml.cs

@@ -39,6 +39,7 @@ namespace UnifiedFarmLauncher.Views
             this.FindControl<Button>("StartWorkerButton")!.Click += StartWorkerButton_Click;
             this.FindControl<Button>("StopWorkerButton")!.Click += StopWorkerButton_Click;
             this.FindControl<Button>("AttachWorkerButton")!.Click += AttachWorkerButton_Click;
+            this.FindControl<Button>("SettingsButton")!.Click += SettingsButton_Click;
             this.FindControl<TabControl>("WorkerTypeTabs")!.SelectionChanged += WorkerTypeTabs_SelectionChanged;
             this.FindControl<DataGrid>("WorkersGrid")!.SelectionChanged += WorkersGrid_SelectionChanged;
         }
@@ -199,6 +200,12 @@ namespace UnifiedFarmLauncher.Views
             }
         }
 
+        private async void SettingsButton_Click(object? sender, RoutedEventArgs e)
+        {
+            var dialog = new GlobalSettingsWindow();
+            await dialog.ShowDialogAsync(this);
+        }
+
         private void WorkersGrid_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
             if (DataContext is MainWindowViewModel vm)

Views/WorkerEditWindow.axaml

@@ -42,11 +42,11 @@
                         </ComboBox.Items>
                     </ComboBox>
                     
-                    <TextBlock Text="Username:" IsVisible="{Binding HasSheepIt}" Margin="0,10,0,0"/>
-                    <TextBox Name="SheepItUsernameTextBox" Text="{Binding SheepItUsername}" IsVisible="{Binding HasSheepIt}"/>
-                    
-                    <TextBlock Text="Render Key:" IsVisible="{Binding HasSheepIt}" Margin="0,10,0,0"/>
-                    <TextBox Name="SheepItRenderKeyTextBox" Text="{Binding SheepItRenderKey}" IsVisible="{Binding HasSheepIt}" PasswordChar="*"/>
+                    <TextBlock Text="Note: Username and Render Key are configured in Global Settings." 
+                               IsVisible="{Binding HasSheepIt}" 
+                               Margin="0,10,0,0"
+                               Foreground="Gray"
+                               TextWrapping="Wrap"/>
                 </StackPanel>
             </TabItem>