Fix GUI operation script scope

tests/Run-FeatureTests.ps1

@@ -22,6 +22,13 @@ try{
     $saved=Get-Content -LiteralPath $jsonPath -Raw|ConvertFrom-Json
     Assert-True ($saved.Value-eq2-and-not@(Get-ChildItem -LiteralPath $ioRoot -Filter '*.tmp' -Force).Count-and-not@(Get-ChildItem -LiteralPath $ioRoot -Filter '*.previous' -Force).Count) 'Atomic JSON replacement left stale state or temporary files.'
 
+    $probePath=Join-Path $ioRoot 'Probe.ps1';[IO.File]::WriteAllText($probePath,"param([string]`$Value) [IO.File]::WriteAllText((Join-Path `$PSScriptRoot 'probe.txt'),`$Value)",[Text.UTF8Encoding]::new($false))
+    $invoker=New-MsPrivateScriptInvoker -Root $ioRoot
+    $action=({& $invoker 'Probe.ps1' @{Value='nested-module'}}.GetNewClosure())
+    $invokerRun=Invoke-MsPrivateGroupPlan -Groups @([pscustomobject]@{Id='Invoker';Label='Captured script invoker';DependsOn=@();Action=$action})
+    Assert-True ($invokerRun.Status-eq'Completed'-and[IO.File]::ReadAllText((Join-Path $ioRoot 'probe.txt'))-eq'nested-module') 'Captured child-script invoker failed across execution-module scope.'
+    $threw=$false;try{& $invoker '..\outside.ps1' @{}|Out-Null}catch{$threw=$true};Assert-True $threw 'Child-script invoker accepted path traversal.'
+
     $network=Get-Content -LiteralPath (Join-Path $root 'config/network.json') -Raw|ConvertFrom-Json;$network.OptionalTelemetry[1].Fqdn=$network.OptionalTelemetry[0].Fqdn;$path=Join-Path $ioRoot 'network.json';$network|ConvertTo-Json -Depth 8|Set-Content -LiteralPath $path
     $threw=$false;try{Get-WindNetworkCatalog -Path $path|Out-Null}catch{$threw=$true};Assert-True $threw 'Network catalog accepted a duplicate FQDN.'
     $network=Get-Content -LiteralPath (Join-Path $root 'config/network.json') -Raw|ConvertFrom-Json;$network.OptionalTelemetry[0].Fqdn='ctldl.windowsupdate.com';$path=Join-Path $ioRoot 'network-protected.json';$network|ConvertTo-Json -Depth 8|Set-Content -LiteralPath $path