feat: improve combination search and offline build

src/lib/engine/combination-search.test.ts

@@ -1,6 +1,6 @@
 import assert from 'node:assert/strict';
 import test from 'node:test';
-import { generateCombinationCandidates } from './index.ts';
+import { generateCombinationCandidates, resolveCandidateAwakening } from './index.ts';
 
 const cards = [
   { id: 'a-1', characterId: 'a', score: 10 },
@@ -20,3 +20,27 @@ test('빔 너비만큼 점수가 높은 조합을 남긴다', () => {
   assert.equal(result.length, 2);
   assert.deepEqual(result[0].map((card) => card.id).sort(), ['b-1', 'c-1']);
 });
+
+test('편성 점수로 카드 간 시너지를 선별할 수 있다', () => {
+  const synergyCards = [
+    { id: 'a-1', characterId: 'a', score: 10, group: 'x' },
+    { id: 'b-1', characterId: 'b', score: 9, group: 'x' },
+    { id: 'c-1', characterId: 'c', score: 20, group: 'y' }
+  ];
+  const result = generateCombinationCandidates(
+    [],
+    synergyCards,
+    2,
+    (card) => card.score,
+    2,
+    (selected) => selected.reduce((sum, card) => sum + card.score, 0) +
+      (selected.filter((card) => card.group === 'x').length >= 2 ? 100 : 0)
+  );
+  assert.deepEqual(result[0].map((card) => card.id).sort(), ['a-1', 'b-1']);
+});
+
+test('보유한 자동 후보는 설정값보다 실제 개화가 높으면 실제 개화를 사용한다', () => {
+  assert.equal(resolveCandidateAwakening(2, true, 4), 4);
+  assert.equal(resolveCandidateAwakening(4, true, 2), 4);
+  assert.equal(resolveCandidateAwakening(2, false, 5), 2);
+});