finish new install GUI

functions/public/Invoke-WPFToggleAllCategories.ps1

@@ -0,0 +1,51 @@
+function Invoke-WPFToggleAllCategories {
+    <#
+        .SYNOPSIS
+            Expands or collapses all categories in the Install tab
+
+        .PARAMETER Action
+            The action to perform: "Expand" or "Collapse"
+
+        .DESCRIPTION
+            This function iterates through all category containers in the Install tab
+            and expands or collapses their WrapPanels while updating the toggle button labels
+    #>
+
+    param(
+        [Parameter(Mandatory=$true)]
+        [ValidateSet("Expand", "Collapse")]
+        [string]$Action
+    )
+
+    try {
+        if ($null -eq $sync.ItemsControl) {
+            Write-Warning "ItemsControl not initialized"
+            return
+        }
+
+        $targetVisibility = if ($Action -eq "Expand") { [Windows.Visibility]::Visible } else { [Windows.Visibility]::Collapsed }
+        $targetPrefix = if ($Action -eq "Expand") { "-" } else { "+" }
+        $sourcePrefix = if ($Action -eq "Expand") { "+" } else { "-" }
+
+        # Iterate through all items in the ItemsControl
+        $sync.ItemsControl.Items | ForEach-Object {
+            $categoryContainer = $_
+
+            # Check if this is a category container (StackPanel with children)
+            if ($categoryContainer -is [System.Windows.Controls.StackPanel] -and $categoryContainer.Children.Count -ge 2) {
+                # Get the WrapPanel (second child)
+                $wrapPanel = $categoryContainer.Children[1]
+                $wrapPanel.Visibility = $targetVisibility
+
+                # Update the label to show the correct state
+                $categoryLabel = $categoryContainer.Children[0]
+                if ($categoryLabel.Content -like "$sourcePrefix*") {
+                    $categoryLabel.Content = $categoryLabel.Content -replace "^$sourcePrefix ", "$targetPrefix "
+                }
+            }
+        }
+    }
+    catch {
+        Write-Error "Error toggling categories: $_"
+    }
+}