publish: check if metadata-store has started before scrying it
++ metadata-scry
|= [group-path=path app-path=path]
^- (unit metadata)
+ ?. .^(? %gu (scot %p our.bol) %metadata-store (scot %da now.bol) ~) ~
.^ (unit metadata)
%gx
(scot %p our.bol)
