luci-app-adguardhome/root/usr/share/AdGuardHome/watchconfig.sh

#!/bin/sh
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
configpath=$(uci get AdGuardHome.AdGuardHome.configpath)
while :
do
	sleep 10
	if [ -f "$configpath" ]; then
		/etc/init.d/AdGuardHome do_redirect 1
		break
	fi
done
return 0