fixed ui issues.

Author: Cosmos-0118

src/TidyWindow.App/ViewModels/MainViewModel.cs

@@ -31,7 +31,7 @@ public MainViewModel(NavigationService navigationService, ActivityLogService act
             new("Startup", "Control Run keys, startup folders, tasks, and services", "\uE7E7", typeof(StartupControllerPage)),
             new("Performance lab", "Lean 8-step stack: power, services, hardware, kernel, security, tracing, scheduler, auto-tune", "\uE945", typeof(PerformanceLabPage)),
             new("PathPilot", "Control runtime precedence and PATH backups", "\uE71B", typeof(PathPilotPage)),
-            new("Registry optimizer", "Stage registry defaults safely", "\uE9C3", typeof(RegistryOptimizerPage)),
+            new("Registry optimizer", "Stage registry defaults safely", "\uE9F5", typeof(RegistryOptimizerPage)),
             new("Maintenance", "Review installed packages, updates, and removals", "\uE90A", typeof(PackageMaintenancePage)),
             new("Deep scan", "Scan to surface files fast", "\uE721", typeof(DeepScanPage)),
             new("Cleanup", "Preview clutter before removing files", "\uE74D", typeof(CleanupPage)),

src/TidyWindow.App/Views/EssentialsPage.xaml

@@ -217,8 +217,10 @@
         </Style>
 
         <Style x:Key="EssentialsPivotToggleStyle" TargetType="ToggleButton">
-            <Setter Property="Margin" Value="0,0,12,12"/>
+            <Setter Property="Margin" Value="8,0,8,0"/>
             <Setter Property="Padding" Value="18,10"/>
+            <Setter Property="HorizontalAlignment" Value="Stretch"/>
+            <Setter Property="HorizontalContentAlignment" Value="Center"/>
             <Setter Property="Background" Value="#0F1A2F"/>
             <Setter Property="Foreground" Value="#E2E8F0"/>
             <Setter Property="BorderBrush" Value="#263654"/>
@@ -545,43 +547,32 @@
                                    FontSize="12"
                                    Foreground="#8CA0BF"
                                    Margin="0,0,0,10"/>
-                        <Grid>
-                            <Grid.ColumnDefinitions>
-                                <ColumnDefinition Width="*"/>
-                                <ColumnDefinition Width="*"/>
-                                <ColumnDefinition Width="*"/>
-                            </Grid.ColumnDefinitions>
-
-                            <ToggleButton Grid.Column="0"
-                                          Content="Task shelf"
+                        <UniformGrid Columns="3" HorizontalAlignment="Stretch">
+                            <ToggleButton Content="Task shelf"
                                           Padding="16,10"
                                           MinHeight="42"
-                                          Margin="0,0,10,0"
                                           FontWeight="SemiBold"
                                           Style="{StaticResource EssentialsPivotToggleStyle}"
                                           Command="{Binding NavigatePivotCommand}"
                                           CommandParameter="{x:Static viewModels:EssentialsPivot.Tasks}"
                                           IsChecked="{Binding CurrentPivot, Converter={StaticResource EnumEqualsConverter}, ConverterParameter={x:Static viewModels:EssentialsPivot.Tasks}}"/>
-                            <ToggleButton Grid.Column="1"
-                                          Content="Queue + output"
+                            <ToggleButton Content="Queue + output"
                                           Padding="16,10"
                                           MinHeight="42"
-                                          Margin="0,0,10,0"
                                           FontWeight="SemiBold"
                                           Style="{StaticResource EssentialsPivotToggleStyle}"
                                           Command="{Binding NavigatePivotCommand}"
                                           CommandParameter="{x:Static viewModels:EssentialsPivot.Queue}"
                                           IsChecked="{Binding CurrentPivot, Converter={StaticResource EnumEqualsConverter}, ConverterParameter={x:Static viewModels:EssentialsPivot.Queue}}"/>
-                            <ToggleButton Grid.Column="2"
-                                          Content="Automation settings"
+                            <ToggleButton Content="Automation settings"
                                           Padding="16,10"
                                           MinHeight="42"
                                           FontWeight="SemiBold"
                                           Style="{StaticResource EssentialsPivotToggleStyle}"
                                           Command="{Binding NavigatePivotCommand}"
                                           CommandParameter="{x:Static viewModels:EssentialsPivot.Settings}"
                                           IsChecked="{Binding CurrentPivot, Converter={StaticResource EnumEqualsConverter}, ConverterParameter={x:Static viewModels:EssentialsPivot.Settings}}"/>
-                        </Grid>
+                        </UniformGrid>
                     </StackPanel>
                 </Border>