도적 다음 스킬 반복 효과 추가

tools/balance/sim-balance.test.mjs

@@ -713,6 +713,28 @@ test("simulateCombat: nextSkillCostZero makes the next skill free", () => {
   assert.equal(r.playerHpRemaining, 80);
 });
 
+test("simulateCombat: nextSkillRepeatCount repeats the next skill effect", () => {
+  const shared = {
+    cards: {
+      Burst: { name: "Burst", cost: 1, kind: "Skill", draw: 1, block: 5, nextSkillRepeatCount: 1 },
+      Guard: { name: "Guard", cost: 2, kind: "Skill", block: 8 },
+    },
+    starterDeck: ["Burst", "Guard"],
+    monsters: [{ name: "Dummy", maxHp: 9999, intents: [{ kind: "Attack", value: 15 }] }],
+  };
+  const withBurst = simulateCombat(shared, () => 0.999999);
+  const withoutBurst = simulateCombat({
+    ...shared,
+    cards: {
+      Burst: { name: "Burst", cost: 1, kind: "Skill", draw: 1, block: 5 },
+      Guard: shared.cards.Guard,
+    },
+  }, () => 0.999999);
+  assert.equal(withBurst.draw, true);
+  assert.equal(withBurst.playerHpRemaining, 80);
+  assert.ok(withBurst.playerHpRemaining > withoutBurst.playerHpRemaining);
+});
+
 test("chooseAction: skillCostReductionThisTurn allows discounted skills", () => {
   const cards = {
     Guard: { name: "Guard", cost: 2, kind: "Skill", block: 8 },