fix: resolve PSScriptAnalyzer ParseError and StrictMode Count issue

scripts/Cleanup-OrphanedBuildVMs.ps1

@@ -57,8 +57,8 @@ if (-not (Test-Path $VmrunPath -PathType Leaf)) {
 }
 
 $cutoff    = (Get-Date).AddHours(-$MaxAgeHours)
-$orphans   = Get-ChildItem -Path $CloneBaseDir -Directory -ErrorAction SilentlyContinue |
-                 Where-Object { $_.LastWriteTime -lt $cutoff }
+$orphans   = @(Get-ChildItem -Path $CloneBaseDir -Directory -ErrorAction SilentlyContinue |
+                 Where-Object { $_.LastWriteTime -lt $cutoff })
 
 if (-not $orphans) {
     Write-Host "[Cleanup] No orphaned VMs found (threshold: $MaxAgeHours h)."

scripts/Invoke-RetentionPolicy.ps1

@@ -90,7 +90,7 @@ function Remove-OldJobDirs {
         Where-Object { $_.LastWriteTime -lt $cutoff }
 
     if (-not @($old).Count) {
-        Write-Host "[RetentionPolicy] $Label: nothing to purge (cutoff: $($cutoff.ToString('yyyy-MM-dd')))."
+        Write-Host "[RetentionPolicy] ${Label}: nothing to purge (cutoff: $($cutoff.ToString('yyyy-MM-dd')))."
         return
     }