Address workshop issues and expand challenge guidance

scripts/workshop.ps1

@@ -1,5 +1,5 @@
 param(
-  [ValidateSet("bootstrap", "up", "redeploy", "proxy-reload", "down", "logs", "reset")]
+  [ValidateSet("bootstrap", "up", "redeploy", "proxy-reload", "down", "logs", "reset", "reset-hard")]
   [string]$Action = "bootstrap",
   [string]$Distro = ""
 )
@@ -25,6 +25,7 @@ switch ($Action) {
   "down"         { $linuxCommand = "./scripts/compose.sh down" }
   "logs"         { $linuxCommand = "./scripts/compose.sh logs -f" }
   "reset"        { $linuxCommand = "./scripts/reset-lab.sh" }
+  "reset-hard"   { $linuxCommand = "./scripts/reset-lab.sh --hard" }
 }
 
 $wslArgs = @()