Test-NetConnection is Windows-only. Replace with cross-platform TcpClient async-connect helper (same pattern as Measure-CIBenchmark.ps1) so the Prepare scripts run on the Linux host under PowerShell.
Test-NetConnection is Windows-only. Replace with cross-platform TcpClient async-connect helper (same pattern as Measure-CIBenchmark.ps1) so the Prepare scripts run on the Linux host under PowerShell.