Recognize group allies in bribes and deals

docs/PUBLIC_DEALS.md

@@ -1,5 +1,18 @@
 # Public deal records
 
+## Staged group alliances — 28 October 2026
+
+The unexposed Basic classic group prototype treats each member as allied to
+both others for ordinary bribes and for the nonallied public-deal rule.
+Targets, offer controls, acceptance and Truthtrance bribe projections use the
+same current membership. The existing provisional pairwise policy for
+multi-party offers applies to all group edges. Existing records are not
+rewritten when alliances change: an offer may still be declined or withdrawn,
+an active agreement may be released, and a deferred bribe to a newly allied
+recipient stays pending while temporarily unavailable, subject to the existing
+expiry policy. No group mode is exposed in the lobby; other group interactions
+and complete rules acceptance remain unfinished.
+
 ## Structured payments due in a later turn — 28 October 2026
 
 **Prototyped / Partial.** A structured payment may name its offer turn or a