Brings in open trade offers and counter-offers. Cities & Knights gets the same
flow for goods: OfferGoods may be open to the table, CounterGoods answers an
offer, and AcceptCounter / DismissCounters are shared with the base game.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_016eTor2tpxKb4dXbd8RqnvZ