Prime's ruling 2026-10-13. esh-nas (10.0.50.50) had no infra-ops user, so key
login was refused. The same steps as bootstrap-infra-ops-user.yaml (uid/gid
850, fleet key, NOPASSWD sudoers with log_output and the BULK_DATA carve-out,
visudo-validated) ran inside the container from its host. Verified with a
direct ssh infra-ops@10.0.50.50 and sudo -n whoami = root.
