Prototype native Ecaz Nexus Duke Cunning

docs/RULE_DECISIONS.md

@@ -85,6 +85,7 @@ These are unresolved in the cited records. Do not infer an answer from elapsed t
 | CHOAM Secret Ally battle timing | The printed after-victory inspection is optional and the Nexus identity stays secret. The connected prototype chooses a uniform use-or-continue window for every winner when Nexus is enabled and CHOAM absent; nonholders pass, while a holder may decide after the result. This privacy-preserving prompt is a product inference, not publisher text. A holder-only pause would reveal custody and a precommitment would remove the printed choice. Ordinary Karama cancellation remains unestablished by retrieved sources; no response is invented. | [After-victory inspection boundary](NEXUS_CHOAM_SECRET_ALLY.md#after-victory-inspection-audit) |
 | Moritani Secret Ally battle timing | The printed after-loss retention is optional and the Nexus card remains secret. The connected prototype offers the same choice to every loser when Moritani is absent and at least one publicly revealed played card is retainable; a loser with no eligible public card has no useful choice, independent of hidden custody. Only an unallied holder may spend the physical card. This prompt is a privacy-preserving product inference, not publisher timing text. Native Moritani alliance retention and its Karama response remain separate; no generic Secret Ally counter is invented. | [Nexus retention boundary](NEXUS_CARD_RULES.md#moritani-secret-ally-retention-timing) |
 | Ecaz Secret Ally traitor inquiry | The printed panel asks one selected player whether they hold any of the holder's leaders as Traitors, without identifying a leader; it specifies neither native-versus-controlled scope nor answer audience. The connected prototype chooses native printed faction leaders (including dead/captured), ordinary Traitor Cards rather than Face Dancers, and a holder-only historical yes/no. This is a privacy-preserving product interpretation, **not** a publisher ruling. Foreign Ghola/captive scope and table-wide disclosure remain release boundaries. | [Ecaz inquiry source and bounded runtime](NEXUS_ECAZ_RULES.md#bounded-secret-ally-traitor-inquiry-runtime) |
+| Ecaz native Nexus Cunning timing | The printed Cunning takes Duke Vidal for this turn even from capture, Tanks or Ghola custody, but names no phase. The connected first version chooses the quiet Battle phase boundary and a living, uncaptured, non-Ghola shared disc, including a Moritani-controlled Duke. This is a bounded product timing and custody decision, **not** a publisher restriction. Advanced Harkonnen is gated because its existing battle path cannot select Duke. Exceptional return destinations, response priority and combined modules remain gated; ordinary Ecaz Ambassador custody is unaffected. | [Source and bounded runtime](NEXUS_ECAZ_RULES.md#bounded-native-cunning-duke-vidal) |
 | Emperor Secret Ally purchase timing | The bounded normal bank-auction prototype chooses a uniform winner payment confirmation in classic-faction Nexus-only games with Emperor absent, including otherwise sole spice payments. This prevents a holder-only pause from exposing hidden card eligibility. It is a provisional product privacy choice, **not** a user or publisher ruling; the previously asked confirmation-versus-gate question remains open. Seller-paid/allied purchases and other sources stay gated. | [Source contract and bounded prototype](NEXUS_EMPEROR_RULES.md#secret-ally-retain-the-actual-purchase-price), [runtime](NEXUS_EMPEROR_SECRET_ALLY_RUNTIME.md#bank-auction-purchase-alternative) |
 | Discovery prototype inferences | Free entry uses storm order and ordinary source-storm restrictions; these are general-rule inferences. Great Maker currently follows ordinary first-turn worm skipping and Sandtrout suppression; an exhausted token type creates no replacement token. These preserve current source interpretation and physical inventory but are not separately confirmed rulings or complete combined-module certification. | [Interpretations for refinement](DISCOVERY_PROTOTYPE.md#interpretations-retained-for-refinement) |
 | Other Homeworld combinations | Population/force splitting, removal custody, replacement shortages, income accounting and placement ordering remain local to their detailed contracts. | [Homeworld rules](HOMEWORLD_RULES.md), [occupation](HOMEWORLD_OCCUPATION_RULES.md) and the effect documents above |