That's lit, thanks for sharing. So nice to see thats working and I can start using zerotier for real! I think this is an underappreciated convenience for people running smaller networks.
I use Tailscale's MagicDNS. Definitely a huge convenience as I run a few services that I use on the web browser, so having a domain name instead of the IP address is a win.
You can turn on mdns with systemd network files too. Which works over zerotier because it's L2.