See how it works
You are going to play both sides of a separation: two people working out the shape of an arrangement before either of them instructs a lawyer. Write what each of them wants, in their own words.
Each side gets an agent that negotiates for them. Neither agent is shown the other side's limits. Whatever the two agents agree goes to a separate decision engine — deterministic, auditable, and outside any model's reach — which has to accept before it counts. A line about where the children change hands is enforced exactly like a line about money.
The two boxes are one household: the same children, the same home, the same marriage — what differs is what each of them wants out of it. Both examples are drawn from the family this run is about, and a new run is a different family. If you write your own, keep the facts the same on both sides: two people describing different families is not a negotiation.
Everybody in this is invented, and nothing here is legal advice. It is a demonstration of the machinery, not a service for anybody's separation.