Re-add unmount logic

configs/airootfs/root/.automated_script.sh

@@ -52,6 +52,9 @@ install_base_system() {
   # Sync the offline database so pacman can find packages
   pacman -Sy --noconfirm
 
+  # Ensure that no mounts exist from past install attempts
+  findmnt -R /mnt >/dev/null && umount -R /mnt
+
   # Install using files generated by the ./configurator
   # Skip NTP and WKD sync since we're offline (keyring is pre-populated in ISO)
   archinstall \