use macro that injects column-management handle_event/3 callbacks into a CRM LiveView. The host LV must:

• assign :scope (a PhoenixKitCRM.UserRoleView.scope())
• assign :current_user_uuid
• assign :selected_columns (initial column list)
• call assign_column_state/3 from mount/3 to bootstrap modal state

The macro handles show_column_modal, hide_column_modal, add_column, remove_column, reorder_selected_columns, update_table_columns (with and without payload), and reset_to_defaults.