Hide concealed Duke execution from Ghola guidance

docs/DUKE_VIDAL_RULES.md

@@ -1,5 +1,24 @@
 # Duke Prad Vidal lifecycle
 
+## Concealed Duke Ghola guidance — 29 October 2026
+
+**Prototyped / Partial.** Ecaz's private Ghola choice list now uses the Duke
+state projected to Ecaz, just as its ordinary revival guidance does. A secret
+execution of a Duke captured from another controller therefore does not change
+that list before Ecaz can know the death. A publicly dead Duke remains offered;
+actual Ghola actions continue to validate authoritative physical custody.
+
+The focused test stages real Duke capture/execution transitions and a conserved
+physical Ghola. It fails on the prior unprojected guidance and passes with the
+fix; four related files pass 27 cases. Two older cohort journeys initially
+failed on the prior code too; their fixture now waits for Ecaz's real ordered
+Advanced Revival opportunity. A separate potential disclosure remains: in
+admitted Advanced Harkonnen profiles, the Ambassador acquisition descriptor
+uses actual Duke custody and may distinguish a secretly captured Duke from a
+publicly equivalent free Duke. Plain Advanced Ecaz/Harkonnen acquisition stays
+guarded until a public-safe solution is implemented. Broader capture assurance
+and deployed verification remain open.
+
 ## Occupied Ecaz grant — 26 October 2026
 
 The occupied Homeworld now connects its living shared-Duke recipient choice,