metadata-hook: use dbug agent wrapper
:: /group/%group-path all updates related to this group
::
/- *metadata-store, *metadata-hook
-/+ default-agent
+/+ default-agent, dbug
|%
+$ card card:agent:gall
+$ versioned-state
--
=| state-zero
=* state -
+%- agent:dbug
^- agent:gall
=<
|_ =bowl:gall
