Implement Bene Gesserit Nexus advisor conversion with durable responses

components/nexus-cards.tsx

@@ -118,7 +118,7 @@ export function NexusCards({ game, act, busy }: { game: GameView; act: (action:
       <div>
         <h3>Nexus cards</h3>
         <p className="fine">{offer.deckCount} in deck · {offer.discardCount} discarded · {Object.values(offer.held).filter((held) => held === true).length} held</p>
-        <p>Atreides Nexus actions are available at their battle timing; other card effects are not playable yet.</p>
+        <p>Playable effects include Atreides inspections, Harkonnen exchanges, and Tleilaxu, Ixian and Bene Gesserit Cunning. Use the controls shown at each effect’s timing; other effects remain unavailable.</p>
       </div>
       {game.nexusAtreides && offer.card === 'atreides' && (
         <div aria-label="Atreides Nexus effect" className="space-y-2">