Roles become presets over three orthogonal traits declared in one map:
class (who lives here), host (runs VMs), join (authkey or interactive
login). Every per-role behavior now keys off the traits — the /dev/kvm
advisory rides host=yes, the next-steps log rides class and host — and
tag:server is derived policy, not a trait: only control-plane and
workload are shapes the control plane manages, so every other role
refuses the effective tag. join=login inverts the tag assertion (a
user-owned node must come up untagged; a tag is refused and backed out
on first join, refused without back-out on a box already joined) and
refuses a set TS_AUTHKEY before the root check. The verified shape is
recorded convergently in /etc/rig/role as ground truth for rig users.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>