Enable Basic Richese Semuta in Nexus games

docs/RULE_DECISIONS.md

@@ -1,5 +1,12 @@
 # Rule decision index
 
+## Basic public Semuta and Nexus — 30 October 2026
+
+Fresh CHOAM-deck Richese Nexus starts compose existing Semuta, CHOAM and
+Emperor effects and simultaneous Sapho ordering. Their timing reuses the
+existing provisional online reaction convention, not a new publisher ruling.
+[Scope](NEXUS_CARD_RULES.md#basic-public-semuta-and-nexus--30-october-2026).
+
 ## Basic mixed-deck Nexus reactions — 30 October 2026
 
 Previously initialized Ixian and Harkonnen reactions use the actual selected