Gates: linked records hold the door — Gates are checked when it matters

The record's Posting panel shows each gate with a live verdict, so the person shepherding a record can see exactly what is still in the way. Gates are re-evaluated at the moment of posting — a linked record that changed since the panel was drawn can't slip through — and when a linked record changes in a way that clears the last gate, the people who can post are told the record is ready.