Add photobooth folder presets

clients/photobooth-uploader/PhotoboothUploader/MainWindow.axaml

@@ -49,6 +49,10 @@
                 <StackPanel Spacing="8">
                     <TextBlock Text="Upload-Ordner" FontWeight="SemiBold" />
                     <TextBlock x:Name="FolderText" Text="Noch nicht ausgewählt." TextWrapping="Wrap" Classes="subtitle" />
+                    <StackPanel Orientation="Horizontal" Spacing="8">
+                        <Button x:Name="DslrBoothPresetButton" Content="DSLrBooth" Click="DslrBoothPresetButton_Click" Classes="secondary" IsVisible="False" />
+                        <Button x:Name="SparkboothPresetButton" Content="Sparkbooth" Click="SparkboothPresetButton_Click" Classes="secondary" IsVisible="False" />
+                    </StackPanel>
                     <StackPanel Orientation="Horizontal" Spacing="8">
                         <Button x:Name="PickFolderButton" Content="Ordner auswählen" Click="PickFolderButton_Click" IsEnabled="False" Classes="primary" />
                         <Button x:Name="TestUploadButton" Content="Test-Upload senden" Click="TestUploadButton_Click" IsEnabled="False" Classes="secondary" />

clients/photobooth-uploader/PhotoboothUploader/MainWindow.axaml.cs

@@ -169,6 +169,16 @@ public partial class MainWindow : Window
         StartUploadPipelineIfReady();
     }
 
+    private void DslrBoothPresetButton_Click(object? sender, RoutedEventArgs e)
+    {
+        ApplyPresetFolder(GetDslrBoothFolder());
+    }
+
+    private void SparkboothPresetButton_Click(object? sender, RoutedEventArgs e)
+    {
+        ApplyPresetFolder(GetSparkboothFolder());
+    }
+
     private void ApplySettings()
     {
         if (!string.IsNullOrWhiteSpace(_settings.WatchFolder))
@@ -202,6 +212,7 @@ public partial class MainWindow : Window
         UpdateSteps();
         RefreshProfiles();
         UpdateAdvancedLockState();
+        UpdatePresetButtons();
     }
 
     private void OnWindowOpened(object? sender, EventArgs e)
@@ -1289,4 +1300,51 @@ public partial class MainWindow : Window
 
         return _logBuffer.Count > 0 ? string.Join(Environment.NewLine, _logBuffer) : string.Empty;
     }
+
+    private void UpdatePresetButtons()
+    {
+        DslrBoothPresetButton.IsVisible = OperatingSystem.IsWindows();
+        SparkboothPresetButton.IsVisible = OperatingSystem.IsWindows() || OperatingSystem.IsMacOS();
+    }
+
+    private void ApplyPresetFolder(string? folder)
+    {
+        if (string.IsNullOrWhiteSpace(folder))
+        {
+            UpdateStatus("Preset-Ordner nicht verfügbar.");
+            return;
+        }
+
+        try
+        {
+            Directory.CreateDirectory(folder);
+        }
+        catch
+        {
+            UpdateStatus("Preset-Ordner konnte nicht erstellt werden.");
+            return;
+        }
+
+        _settings.WatchFolder = folder;
+        _settingsStore.Save(_settings);
+        FolderText.Text = folder;
+        UpdateFolderHealth();
+        StartUploadPipelineIfReady();
+    }
+
+    private static string? GetDslrBoothFolder()
+    {
+        return OperatingSystem.IsWindows() ? @"C:\dslrBooth" : null;
+    }
+
+    private static string? GetSparkboothFolder()
+    {
+        var documents = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
+        if (string.IsNullOrWhiteSpace(documents))
+        {
+            return null;
+        }
+
+        return Path.Combine(documents, "sparkbooth");
+    }
 }