Allow chosen Reinforcements reserve costs

game/reinforcements.ts

@@ -17,15 +17,26 @@ export function isReinforcements(card: Card | undefined): boolean {
     ecazTreacheryDefinition(card)?.card.effect === 'reinforcements';
 }
 
-/** Spend exactly three own reserve counters, ordinary before elite; never dial them. */
+/** Legal elite counts for the three-counter fee, in ordinary-first order. */
+export function reinforcementsEliteOptions(normalReserves: number, eliteReserves: number): number[] {
+  if (![normalReserves, eliteReserves].every(n => typeof n === 'number' && Number.isSafeInteger(n) && n >= 0))
+    throw new ReinforcementsError('Reinforcements needs valid nonnegative reserve counts.');
+  const minimum = Math.max(0, 3 - normalReserves);
+  const maximum = Math.min(3, eliteReserves);
+  return minimum > maximum ? [] : Array.from({ length: maximum - minimum + 1 }, (_, i) => minimum + i);
+}
+
+/** Spend exactly three own reserve counters; omitted choice retains the original ordinary-first rule. */
 export function quoteReinforcements(
   normalReserves: number,
   eliteReserves: number,
+  selectedElite?: number,
 ): { normal: number; elite: number; bonus: 2 } {
-  if (![normalReserves, eliteReserves].every(n => typeof n === 'number' && Number.isSafeInteger(n) && n >= 0))
-    throw new ReinforcementsError('Reinforcements needs valid nonnegative reserve counts.');
-  if (normalReserves < 3 && eliteReserves < 3 - normalReserves)
+  const options = reinforcementsEliteOptions(normalReserves, eliteReserves);
+  if (!options.length)
     throw new ReinforcementsError('Reinforcements needs at least three own forces in reserves.');
-  const normal = Math.min(3, normalReserves);
-  return { normal, elite: 3 - normal, bonus: 2 };
+  const elite = selectedElite === undefined ? options[0] : selectedElite;
+  if (!Number.isSafeInteger(elite) || !options.includes(elite))
+    throw new ReinforcementsError('Choose an available mix of three ordinary and elite reserve forces.');
+  return { normal: 3 - elite, elite, bonus: 2 };
 }