Treat a generic battle-power decline as passing borrowed Nexus Voice

game/engine.ts

@@ -33830,6 +33830,11 @@ function applyActionInner(
   }
   if (t === 'declineBattlePower') {
     const b = g.battle;
+    if (b?.preparation?.kind === 'nexusVoice' && b.preparation.owner === id && b.nexusBorrowedVoice) {
+      // A generic decline is the same as continuing without the borrowed command.
+      playNexusBorrowedVoice(g, p, { type: 'nexusBorrowedVoice', event: b.nexusBorrowedVoice.event, use: false });
+      return g;
+    }
     requireRule(
       b?.preparation?.owner === id && !['nexusVoice', 'prescienceAnswer', 'nexusPrescienceAnswer'].includes(b.preparation.kind),
       'You do not own this battle power decision.',

tests/fixture-nexus-cunning.ts

@@ -19,6 +19,8 @@ export function suboidFixture(advanced = true, atreides = false) {
   g = applyAction(g, 'p', { type: 'chooseBattle', territory: 'pasty_mesa', target: 'q' });
   for (const id of ['p', 'q']) if (g.battle!.preLeader && !g.battle!.preLeader.closed)
     g = applyAction(g, id, { type: 'battlePreparationReady', event: g.battle!.event });
+  while (g.battle?.preparation?.kind === 'nexusVoice')
+    g = applyAction(g, g.battle.preparation.owner, { type: 'declineBattlePower' });
   validateNexusCards(g.nexusCards!.cards!, g.players);
   return g;
 }

tests/fixture-nexus-inspection.ts

@@ -126,6 +126,9 @@ export function nexusInspectionFixture(
         type: 'battlePreparationReady',
         event: g.battle!.event,
       });
+  // Pass the absent-BG borrowed Voice opportunity that precedes native Prescience.
+  while (g.battle?.preparation?.kind === 'nexusVoice')
+    g = applyAction(g, g.battle.preparation.owner, { type: 'declineBattlePower' });
   return g;
 }
 export function inspectionHold(g: Game, id: string, kind: Card['kind']): Card {

tests/fixture-nexus-sardaukar.ts

@@ -80,6 +80,8 @@ export function nexusSardaukarFixture(
         type: 'battlePreparationReady',
         event: g.battle!.event,
       });
+  while (g.battle?.preparation?.kind === 'nexusVoice')
+    g = applyAction(g, g.battle.preparation.owner, { type: 'declineBattlePower' });
   nexusSardaukarInventory(g);
   return g;
 }