EXTENSIONS

Manage libvirt/KVM over SSH: define and undefine virtual networks including the default, clone a golden volume or zvol per node, define domains from a clone, control power, and capture the serial console. The SSH target, libvirt URI and every operand are method arguments, so one definition manages any hypervisor.

USB-UART serial console + config management. The `serial-port` type is the raw console primitive (establish/send/read/exec/login) over a serial device (e.g. /dev/ttyUSB0); line config via stty(1), byte I/O via a direct Deno.open fd or a dd/cat subprocess fallback (auto), device paths allowlisted so login's vaulted password can't reach an arbitrary terminal. The `serial-cfgmgmt/*` types (node/exec/package/service) are the serial-console counterpart to SSH config management — for boards with no network — built on that same console primitive.