graph-store: update indices of leaf posts
++ convert-unix-timestamped-node
|= =node:store
^- node:store
+ =. index.post.node
+ (convert-unix-timestamped-index index.post.node)
?. ?=(%graph -.children.node)
node
- :+ post.node(index (convert-unix-timestamped-index index.post.node))
+ :+ post.node
%graph
(convert-unix-timestamped-graph p.children.node)
::
