diff --git a/Setup/MainWindow.xaml b/Setup/MainWindow.xaml
deleted file mode 100644
index 6ddee11..0000000
--- a/Setup/MainWindow.xaml
+++ /dev/null
@@ -1,183 +0,0 @@
-<Window x:Class="DeskCoreSetup.MainWindow"
-        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        Title="DeskCore Setup" Icon="app.ico" Width="720" Height="500" ResizeMode="CanMinimize"
-        Background="{DynamicResource BaseBrush}" Foreground="{DynamicResource TextBrush}"
-        FontFamily="{DynamicResource UiFont}" FontSize="14"
-        TextOptions.TextFormattingMode="Display" UseLayoutRounding="True"
-        WindowStartupLocation="CenterScreen">
-
-    <WindowChrome.WindowChrome>
-        <WindowChrome CaptionHeight="36" ResizeBorderThickness="0" GlassFrameThickness="0,0,0,1"
-                      CornerRadius="0" UseAeroCaptionButtons="False"/>
-    </WindowChrome.WindowChrome>
-
-    <Window.Resources>
-        <Style x:Key="StepText" TargetType="TextBlock">
-            <Setter Property="Margin" Value="0,0,0,14"/>
-            <Setter Property="Foreground" Value="{DynamicResource TextTertiaryBrush}"/>
-        </Style>
-        <Style x:Key="PageTitle" TargetType="TextBlock">
-            <Setter Property="FontFamily" Value="{DynamicResource DisplayFont}"/>
-            <Setter Property="FontSize" Value="24"/>
-            <Setter Property="FontWeight" Value="SemiBold"/>
-            <Setter Property="Margin" Value="0,0,0,12"/>
-        </Style>
-        <Style x:Key="Body" TargetType="TextBlock">
-            <Setter Property="TextWrapping" Value="Wrap"/>
-            <Setter Property="LineHeight" Value="21"/>
-            <Setter Property="Foreground" Value="{DynamicResource TextSecondaryBrush}"/>
-        </Style>
-    </Window.Resources>
-
-    <Grid>
-        <Grid.RowDefinitions>
-            <RowDefinition Height="36"/>
-            <RowDefinition Height="*"/>
-            <RowDefinition Height="Auto"/>
-        </Grid.RowDefinitions>
-        <Grid.ColumnDefinitions>
-            <ColumnDefinition Width="220"/>
-            <ColumnDefinition Width="*"/>
-        </Grid.ColumnDefinitions>
-
-        <!-- Titelleiste -->
-        <Grid Grid.ColumnSpan="2">
-            <StackPanel Orientation="Horizontal" VerticalAlignment="Center" Margin="14,0,0,0">
-                <Image Source="app.ico" Width="16" Height="16" RenderOptions.BitmapScalingMode="HighQuality"/>
-                <TextBlock x:Name="WindowTitle" Text="DeskCore Setup" FontSize="12" Margin="10,0,0,0" VerticalAlignment="Center"/>
-            </StackPanel>
-            <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Top">
-                <Button Style="{StaticResource CaptionButton}" Content="&#xE921;" Click="Minimize_Click"
-                        WindowChrome.IsHitTestVisibleInChrome="True"/>
-                <Button x:Name="CloseButton" Style="{StaticResource CloseCaptionButton}" Content="&#xE8BB;" Click="Cancel_Click"
-                        WindowChrome.IsHitTestVisibleInChrome="True"/>
-            </StackPanel>
-        </Grid>
-
-        <!-- Seitenleiste mit Schritten -->
-        <StackPanel Grid.Row="1" Grid.RowSpan="2" Margin="28,18,20,20">
-            <Image Source="app.png" Width="72" Height="72" HorizontalAlignment="Left" RenderOptions.BitmapScalingMode="HighQuality"/>
-            <TextBlock Text="DeskCore" FontFamily="{DynamicResource DisplayFont}" FontSize="22" FontWeight="SemiBold" Margin="0,14,0,0"/>
-            <TextBlock x:Name="VersionText" Foreground="{DynamicResource TextSecondaryBrush}" FontSize="12" Margin="0,2,0,28"/>
-            <StackPanel x:Name="Steps">
-                <TextBlock x:Name="Step0" Text="Willkommen" Style="{StaticResource StepText}"/>
-                <TextBlock x:Name="Step1" Text="Lizenz" Style="{StaticResource StepText}"/>
-                <TextBlock x:Name="Step2" Text="Optionen" Style="{StaticResource StepText}"/>
-                <TextBlock x:Name="Step3" Text="Installation" Style="{StaticResource StepText}"/>
-            </StackPanel>
-        </StackPanel>
-
-        <!-- Inhalt -->
-        <Border Grid.Row="1" Grid.Column="1" Background="{DynamicResource LayerBrush}" BorderBrush="{DynamicResource LayerStrokeBrush}"
-                BorderThickness="1,1,0,1" CornerRadius="8,0,0,8" Padding="32,28,32,20">
-            <Grid>
-                <!-- 0: Willkommen -->
-                <StackPanel x:Name="PageWelcome">
-                    <TextBlock Text="Willkommen bei DeskCore" Style="{StaticResource PageTitle}"/>
-                    <TextBlock Style="{StaticResource Body}"
-                               Text="DeskCore sortiert deine Desktop-Icons in eigene Kategorien – mit Suche, Desktop-Boxen, automatischem Einsortieren und Rückgängig-Funktion."/>
-                    <TextBlock Style="{StaticResource Body}" Margin="0,14,0,0"
-                               Text="Der Assistent installiert DeskCore nur für dein Benutzerkonto. Administratorrechte sind nicht nötig."/>
-                    <Border x:Name="RuntimeHint" Margin="0,22,0,0" Padding="14,10" CornerRadius="6" Visibility="Collapsed"
-                            Background="{DynamicResource ControlFillBrush}" BorderBrush="{DynamicResource ControlStrokeBrush}" BorderThickness="1">
-                        <DockPanel>
-                            <TextBlock DockPanel.Dock="Left" Text="&#xE7BA;" FontFamily="{DynamicResource IconFont}" FontSize="16"
-                                       Foreground="{DynamicResource AccentBrush}" Margin="0,2,12,0" VerticalAlignment="Top"/>
-                            <TextBlock x:Name="RuntimeHintText" TextWrapping="Wrap" LineHeight="20"/>
-                        </DockPanel>
-                    </Border>
-                    <Border x:Name="UpdateHint" Margin="0,22,0,0" Padding="14,10" CornerRadius="6" Visibility="Collapsed"
-                            Background="{DynamicResource AccentSubtleBrush}" BorderBrush="{DynamicResource AccentSubtleStrokeBrush}" BorderThickness="1">
-                        <DockPanel>
-                            <TextBlock DockPanel.Dock="Left" Text="&#xE946;" FontFamily="{DynamicResource IconFont}" FontSize="16"
-                                       Foreground="{DynamicResource AccentBrush}" Margin="0,2,12,0" VerticalAlignment="Top"/>
-                            <TextBlock x:Name="UpdateHintText" TextWrapping="Wrap" LineHeight="20"/>
-                        </DockPanel>
-                    </Border>
-                </StackPanel>
-
-                <!-- 1: Lizenz -->
-                <DockPanel x:Name="PageLicense" Visibility="Collapsed">
-                    <TextBlock DockPanel.Dock="Top" Text="Lizenz- und Nutzungsbedingungen" Style="{StaticResource PageTitle}"/>
-                    <CheckBox x:Name="AcceptLicense" DockPanel.Dock="Bottom" Margin="0,14,0,0" Click="AcceptLicense_Click"
-                              Content="Ich akzeptiere die Lizenz- und Nutzungsbedingungen"/>
-                    <Border Background="{DynamicResource ControlFillBrush}" BorderBrush="{DynamicResource ControlStrokeBrush}"
-                            BorderThickness="1" CornerRadius="6">
-                        <ScrollViewer VerticalScrollBarVisibility="Auto">
-                            <TextBlock x:Name="LicenseText" TextWrapping="Wrap" FontSize="12.5" LineHeight="18" Margin="14,10"/>
-                        </ScrollViewer>
-                    </Border>
-                </DockPanel>
-
-                <!-- 2: Optionen -->
-                <StackPanel x:Name="PageOptions" Visibility="Collapsed">
-                    <TextBlock Text="Optionen" Style="{StaticResource PageTitle}"/>
-                    <TextBlock Text="Installationsordner" FontWeight="SemiBold" FontSize="13" Margin="0,4,0,8"/>
-                    <DockPanel>
-                        <Button DockPanel.Dock="Right" Content="Ändern …" Margin="8,0,0,0" Click="ChangeDir_Click"/>
-                        <TextBox x:Name="DirBox"/>
-                    </DockPanel>
-                    <CheckBox x:Name="DesktopLinkBox" Content="Verknüpfung auf dem Desktop" Margin="0,24,0,0" IsChecked="True"/>
-                    <CheckBox x:Name="StartMenuBox" Content="Eintrag im Startmenü" Margin="0,12,0,0" IsChecked="True" IsEnabled="False"/>
-                    <CheckBox x:Name="AutostartBox" Content="Mit Windows starten (unauffällig im Infobereich)" Margin="0,12,0,0"/>
-                    <CheckBox x:Name="RuntimeBox" Margin="0,12,0,0" IsChecked="True" Visibility="Collapsed"
-                              Content="Microsoft .NET 9 Desktop Runtime automatisch installieren (benötigt, ca. 55 MB)"/>
-                </StackPanel>
-
-                <!-- 3: Fortschritt / Fertig -->
-                <StackPanel x:Name="PageProgress" Visibility="Collapsed">
-                    <TextBlock x:Name="ProgressTitle" Text="DeskCore wird installiert …" Style="{StaticResource PageTitle}"/>
-                    <TextBlock x:Name="ProgressText" Style="{StaticResource Body}" Text="Einen Moment bitte."/>
-                    <Border x:Name="ProgressTrack" Height="4" CornerRadius="2" Margin="0,22,0,0" Background="{DynamicResource SubtleSelectedBrush}">
-                        <Border x:Name="ProgressFill" HorizontalAlignment="Left" Width="0" CornerRadius="2" Background="{DynamicResource AccentBrush}"/>
-                    </Border>
-                    <StackPanel x:Name="DonePanel" Visibility="Collapsed" Margin="0,26,0,0">
-                        <StackPanel Orientation="Horizontal">
-                            <Border Width="28" Height="28" CornerRadius="14" Background="{DynamicResource SuccessBrush}">
-                                <TextBlock Text="&#xE73E;" FontFamily="{DynamicResource IconFont}" FontSize="13" Foreground="White"
-                                           HorizontalAlignment="Center" VerticalAlignment="Center"/>
-                            </Border>
-                            <TextBlock x:Name="DoneText" VerticalAlignment="Center" Margin="12,0,0,0" FontWeight="SemiBold"/>
-                        </StackPanel>
-                        <Border x:Name="RuntimeMissing" Margin="0,18,0,0" Padding="14,10" CornerRadius="6" Visibility="Collapsed"
-                                Background="{DynamicResource AccentSubtleBrush}" BorderBrush="{DynamicResource AccentSubtleStrokeBrush}" BorderThickness="1">
-                            <StackPanel>
-                                <TextBlock TextWrapping="Wrap" LineHeight="20"
-                                           Text="Damit DeskCore startet, wird noch die kostenlose „Microsoft .NET 9 Desktop Runtime“ benötigt."/>
-                                <Button Content="Download-Seite von Microsoft öffnen" HorizontalAlignment="Left" Margin="0,10,0,0" Click="OpenRuntimePage_Click"/>
-                            </StackPanel>
-                        </Border>
-                        <CheckBox x:Name="LaunchBox" Content="DeskCore jetzt starten" IsChecked="True" Margin="0,22,0,0"/>
-                    </StackPanel>
-                </StackPanel>
-
-                <!-- Deinstallation -->
-                <StackPanel x:Name="PageUninstall" Visibility="Collapsed">
-                    <TextBlock Text="DeskCore deinstallieren" Style="{StaticResource PageTitle}"/>
-                    <TextBlock Style="{StaticResource Body}"
-                               Text="DeskCore wird von deinem PC entfernt: Programm, Verknüpfungen, Autostart und der Eintrag in den Windows-Einstellungen."/>
-                    <Border Margin="0,22,0,0" Padding="16,14" CornerRadius="6" Background="{DynamicResource ControlFillBrush}"
-                            BorderBrush="{DynamicResource ControlStrokeBrush}" BorderThickness="1">
-                        <StackPanel>
-                            <TextBlock Text="Deine Kategorien bleiben standardmäßig erhalten" FontWeight="SemiBold"/>
-                            <TextBlock x:Name="DataInfo" Style="{StaticResource Body}" FontSize="12.5" Margin="0,4,0,12"/>
-                            <CheckBox x:Name="RemoveDataBox" Content="Auch Kategorien und Einstellungen entfernen (Papierkorb)"
-                                      Click="RemoveDataBox_Click"/>
-                            <TextBlock x:Name="RemoveDataWarning" Visibility="Collapsed" Margin="30,8,0,0" TextWrapping="Wrap" FontSize="12.5"
-                                       Foreground="{DynamicResource DangerBrush}"
-                                       Text="Achtung: Dateien und Ordner, die nur noch in deinen Kategorien liegen, wandern damit in den Papierkorb."/>
-                        </StackPanel>
-                    </Border>
-                </StackPanel>
-            </Grid>
-        </Border>
-
-        <!-- Fußleiste -->
-        <StackPanel Grid.Row="2" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,14,20,18">
-            <Button x:Name="BackButton" Content="Zurück" Width="110" Margin="0,0,8,0" Click="Back_Click"/>
-            <Button x:Name="NextButton" Content="Weiter" Width="130" Margin="0,0,8,0" Style="{StaticResource AccentButton}" IsDefault="True" Click="Next_Click"/>
-            <Button x:Name="CancelButton" Content="Abbrechen" Width="110" Click="Cancel_Click"/>
-        </StackPanel>
-    </Grid>
-</Window>