let _presets = (import "schemas/lib/concerns_presets.ncl").presets in

{
  vol_prepare | default = {
    mode     | default = 'taskserv,
    volume_name    | default = "",
    mount_path     | default = "/mnt/data",
    fs_type        | default = 'ext4,
    label_prefix   | default = "scsi-0HC_Volume_",
    fstab_options  | default = "defaults,nofail,discard 0 0",
    operations     | default = {
      install   = true,
      reinstall = true,
    },

    # ServiceConcerns default — block device preparation; stateless preset with custom backup reason.
    concerns | default = _presets.stateless & {
      backup | force = { kind = 'disabled, reason = "stateless: filesystem prep operation, no runtime data" },
    },
  },
}