gofi: Static DHCP Leases Without the Server

Here’s a thing I’ve quietly hated for years: managing static IP assignments and DNS names for the little fleet of gear on my network. Every homelab has it — the Pi in the garage, the shop printer, the sensor node in the attic, the pool controller. You want them at known addresses with known names. And the “normal” way to get that is to stand up a DHCP server and a DNS server and keep them in sync. Ugh, no.