Prototype public deal agreements

README.md

@@ -25,6 +25,13 @@ to swap with an AI seat, which currently accepts immediately. Accepted swaps
 clear human readiness. See
 [faction allocation](docs/FACTION_ALLOCATION.md).
 
+During play, **Public deals** lets two nonallied human seats record terms,
+accept or decline an offer, and agree to release it. Terms are visible to the
+table and rely on players to honor them; the game does not interpret promises
+or determine impossibility. Use **Bribes** separately for an actual spice
+payment. AI and multiparty deals remain unfinished. See
+[public deals](docs/PUBLIC_DEALS.md).
+
 For the provisional two-person setup, the host enables **Two players, two
 factions each** in the lobby. Each person joins with one faction, then adds a
 second and uses **Active faction** to switch seats. Ready each faction before