error: "`hass-axi entity update` is a write, and this session is read-only"
code: READ_ONLY
class: usage
help[3]:
  This session is read-only; the command was refused before anything changed
  Reads still work, e.g. `hass-axi state list`, `hass-axi entity list`, `hass-axi area list`
  Unset HASS_AXI_READ_ONLY (or HA_AXI_READ_ONLY, its deprecated spelling) to allow writes; it is a switch, so any non-empty value enables it
