graph-validator-post: enable unreads and notifications
++ notification-kind
^- (unit notif-kind:hark)
=/ len (lent index.p.i)
- ?: =(1 len) ~
- `[%post [(dec len) len] %none %children]
+ =/ =mode:hark
+ ?:(=(1 len) %count %none)
+ `[%post [(dec len) len] mode %children]
::
++ transform-add-nodes
|= [=index =post =atom was-parent-modified=?]
