feat: update song selection, score UI, and song creator features

- SongSelectManager/SongDetailPanel: 곡 선택 및 상세 패널 개선
- SongCreatorManager: 곡 생성 기능 추가
- FinalScoreLabel/ScoreManager: 결과 화면 점수 UI 업데이트
- MarqueeText: 마퀴 텍스트 컴포넌트 개선
- NoteData/SongController: 노트 데이터 및 컨트롤러 보완

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Assets/Script/SongController.cs

@@ -79,11 +79,35 @@ public class SongController : MonoBehaviour
             yield break;
         }
         MapData map = JsonUtility.FromJson<MapData>(File.ReadAllText(mapPath));
-        if (map?.target == null)
+        if (map == null)
         {
             Debug.LogError("[SongController] Map parse failed");
             yield break;
         }
+        if (map.target == null)
+            map.target = new List<NoteData>();
+
+        if (IsForcedResultMap(map))
+        {
+            _scoreManager?.SetTotalNotes(Mathf.Max(0, map.forcedResult.totalNotes));
+
+            yield return StartCoroutine(Countdown());
+
+            _audio.PlayClip(clip);
+            yield return new WaitForSeconds(Mathf.Min(Mathf.Max(0.2f, _clipLength), 0.75f));
+
+            _scoreManager?.ApplyForcedResult(
+                map.forcedResult.totalNotes,
+                map.forcedResult.perfect,
+                map.forcedResult.great,
+                map.forcedResult.good,
+                map.forcedResult.miss,
+                map.forcedResult.maxCombo);
+            _scoreManager?.CompleteSong();
+            onLevelComplete?.Invoke();
+            yield break;
+        }
+
         map.target.Sort(CompareNotes);
         if (_clipLength <= 0.0f)
         {
@@ -165,6 +189,9 @@ public class SongController : MonoBehaviour
         return a.lineLayer.CompareTo(b.lineLayer);
     }
 
+    private static bool IsForcedResultMap(MapData map)
+        => map?.forcedResult != null && map.forcedResult.enabled;
+
     private static float MapLaneX(int position)
     {
         int lane = Mathf.Clamp(position, 0, 3);