provide a means to alter the behavior of visitors

[ab9rf]

this steam discussion requests a tool to prevent or delay the departure of a visiting diplomat. it is not out of the question that we could provide such a tool, and more generally manipulate the AI state of visitors to the fort to alter their behavior. some research would likely be required

[Bumber64]

We could probably fix the This visitor has come . issue (where the visit_reasons vector is empty) if we can figure out how to determine the appropriate reason.

The endless nobles visiting your mountain homes should probably be there for Diplomacy. We just need to be able to recognize one.

https://dwarffortressbugtracker.com/view.php?id=12547