Fix: Call prepare_deployment() to handle option 1 (install prerequisites)

The prepare_deployment() function was defined but never called, causing
option 1 (Install Prerequisites) to not execute. Added the function call
after the menu selection loop to properly handle special deployment modes.

scripts/ez-homelab.sh

@@ -2355,6 +2355,9 @@ main() {
 
     echo ""
 
+    # Prepare deployment environment (handles special cases like prerequisites installation)
+    prepare_deployment
+
     # Handle remote server deployment separately
     if [ "$DEPLOY_REMOTE_SERVER" = true ]; then
         # Prompt for configuration values