let _concerns_lib = import "schemas/lib/concerns.ncl" in

{
  LonghornNodePrep = {
    data_path
      | String
      | doc "Absolute path where the Longhorn data volume is mounted (must match vol_prepare mount_path)"
      | default = "/var/lib/longhorn",

    node_labels
      | { _ | String }
      | doc "Labels applied to this node via kubectl — signals Longhorn to use it as a storage node"
      | default = { "node.longhorn.io/create-default-disk" = "true" },

    # ServiceConcerns umbrella (ADR-008). Node-level prep for Longhorn — stateless preset.
    concerns | _concerns_lib.ServiceConcerns | optional,

    ..
  },
}