output "probe_ips" {
  description = "Public IPv4 of each overseas probe machine, keyed by probe name."
  value       = { for k, m in module.probe : k => m.ipv4_address }
}

output "control_plane_ip" {
  description = "Public IPv4 of the control-plane host, if managed here."
  value       = var.control_plane_enabled ? module.control_plane[0].ipv4_address : null
}