add hide/unhide for renderkey

ViewModels/GlobalSettingsViewModel.cs

@@ -8,6 +8,7 @@ namespace UnifiedFarmLauncher.ViewModels
         private readonly ConfigService _configService;
         private string _sheepItUsername = string.Empty;
         private string _sheepItRenderKey = string.Empty;
+        private bool _isRenderKeyVisible = false;
 
         public GlobalSettingsViewModel(ConfigService configService)
         {
@@ -27,6 +28,12 @@ namespace UnifiedFarmLauncher.ViewModels
             set => SetAndRaise(ref _sheepItRenderKey, value);
         }
 
+        public bool IsRenderKeyVisible
+        {
+            get => _isRenderKeyVisible;
+            set => SetAndRaise(ref _isRenderKeyVisible, value);
+        }
+
         private void LoadSettings()
         {
             var config = _configService.Load();

Views/GlobalSettingsWindow.axaml

@@ -15,7 +15,18 @@
                     <TextBox Name="SheepItUsernameTextBox" Text="{Binding SheepItUsername}"/>
                     
                     <TextBlock Text="Render Key:" Margin="0,10,0,0"/>
-                    <TextBox Name="SheepItRenderKeyTextBox" Text="{Binding SheepItRenderKey}" PasswordChar="*"/>
+                    <Grid ColumnDefinitions="*,Auto">
+                        <TextBox Name="SheepItRenderKeyTextBox" 
+                                 Grid.Column="0" 
+                                 Text="{Binding SheepItRenderKey}" 
+                                 PasswordChar="*"
+                                 Margin="0,0,5,0"/>
+                        <Button Name="ToggleRenderKeyButton" 
+                                Grid.Column="1" 
+                                Content="👁" 
+                                Width="40"
+                                ToolTip.Tip="Show/Hide Render Key"/>
+                    </Grid>
                 </StackPanel>
             </TabItem>
         </TabControl>

Views/GlobalSettingsWindow.axaml.cs

@@ -29,6 +29,7 @@ namespace UnifiedFarmLauncher.Views
         {
             this.FindControl<Button>("OkButton")!.Click += OkButton_Click;
             this.FindControl<Button>("CancelButton")!.Click += CancelButton_Click;
+            this.FindControl<Button>("ToggleRenderKeyButton")!.Click += ToggleRenderKeyButton_Click;
         }
 
         private void OkButton_Click(object? sender, RoutedEventArgs e)
@@ -52,6 +53,21 @@ namespace UnifiedFarmLauncher.Views
             Close();
         }
 
+        private void ToggleRenderKeyButton_Click(object? sender, RoutedEventArgs e)
+        {
+            var textBox = this.FindControl<Avalonia.Controls.TextBox>("SheepItRenderKeyTextBox");
+            if (textBox != null)
+            {
+                _viewModel.IsRenderKeyVisible = !_viewModel.IsRenderKeyVisible;
+                textBox.PasswordChar = _viewModel.IsRenderKeyVisible ? '\0' : '*';
+                var button = sender as Button;
+                if (button != null)
+                {
+                    button.Content = _viewModel.IsRenderKeyVisible ? "🙈" : "👁";
+                }
+            }
+        }
+
         public async Task<bool> ShowDialogAsync(Window parent)
         {
             await base.ShowDialog(parent);