Add firstboot onboarding and prep/check tooling

systemd/pikit-ready.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+# Touches /var/run/pikit-ready on boot when firstboot is complete.
+
+set -euo pipefail
+
+DONE_FILE="/var/lib/pikit/firstboot/firstboot.done"
+READY_FILE="/var/run/pikit-ready"
+
+if [ -f "$DONE_FILE" ]; then
+  touch "$READY_FILE"
+fi