Check Advanced victory after Mentat actions

docs/RULE_DECISIONS.md

@@ -1,5 +1,18 @@
 # Rule decision index
 
+## Advanced Mentat victory timing — 29 October 2026
+
+The supplied revision, physical p. 14 (printed p. 12), places victory during
+Mentat; it does not prescribe an ordering for ordinary optional actions. Fresh
+Advanced non-CHOAM phases now provisionally check after players finish those
+opportunities, matching the existing CHOAM closing check. Moritani placement
+and Extortion retain their opening order and do not trigger an early check.
+An accepted shared-victory agreement advances the completed phase once. Basic
+and previously opened unstamped non-CHOAM Mentat phases retain their original
+opening-time check and saved agreement continuations. This is an online timing
+interpretation, not a publisher clarification or complete victory certification.
+[Preview](ADVANCED_PREVIEW.md#simultaneous-victories).
+
 ## Semuta and Ghola during a CHOAM sale — 29 October 2026
 
 The existing printed Semuta, Ghola and Tleilaxu income rules are composed
@@ -759,7 +772,8 @@ retains play without applying that result.
 An agreed increase adds to the ordinary solo and alliance stronghold targets.
 It does not alter independent Ecaz joint-occupation or Homeworld special-victory
 conditions under this provisional composition. The original Mentat opportunity
-resumes, or the completed CHOAM end-of-Mentat continuation advances once. Older
+resumes for opening-time agreements; a completed end-of-Mentat continuation
+advances once. Older
 games without a saved `victoryFinalTurn` retain turn ten as their final turn. A
 unanimous agreement on that final turn provisionally moves it one turn later; a
 further agreement may move it again. An earlier agreement leaves the existing