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/MarqueeText.cs

@@ -5,12 +5,13 @@ using UnityEngine;
 [RequireComponent(typeof(TMP_Text))]
 public class MarqueeText : MonoBehaviour
 {
-    public float speed      = 35f;
-    public float pauseStart = 1.5f;
-    public float pauseEnd   = 0.6f;
+    public float speed      = 14f;
+    public float pauseStart = 1.8f;
+    public float pauseEnd   = 0.9f;
 
     private TMP_Text      _label;
     private RectTransform _rect;
+    private Coroutine     _scrollRoutine;
 
     private void Awake()
     {
@@ -20,7 +21,22 @@ public class MarqueeText : MonoBehaviour
 
     private IEnumerator Start()
     {
-        yield return null; // layout 완료 후 실행
+        yield return null;
+        Refresh();
+    }
+
+    private void OnDisable()
+    {
+        StopScrolling();
+    }
+
+    public void Refresh()
+    {
+        if (!isActiveAndEnabled || _label == null || _rect == null || transform.parent == null)
+            return;
+
+        StopScrolling();
+        SetX(0f);
 
         _label.ForceMeshUpdate();
         float textW      = _label.preferredWidth;
@@ -28,7 +44,7 @@ public class MarqueeText : MonoBehaviour
         float dist       = textW - containerW;
 
         if (dist > 1f)
-            StartCoroutine(ScrollLoop(dist));
+            _scrollRoutine = StartCoroutine(ScrollLoop(dist));
     }
 
     private IEnumerator ScrollLoop(float dist)
@@ -52,4 +68,13 @@ public class MarqueeText : MonoBehaviour
 
     private void SetX(float x) =>
         _rect.anchoredPosition = new Vector2(x, _rect.anchoredPosition.y);
+
+    private void StopScrolling()
+    {
+        if (_scrollRoutine == null)
+            return;
+
+        StopCoroutine(_scrollRoutine);
+        _scrollRoutine = null;
+    }
 }