chore: Assets 디렉토리 구조 정리 및 네이밍 컨벤션 적용

- Assets/_Game/ 하위로 게임 에셋 통합
- External/ 패키지 벤더별 분류 (Synty, Animations, UI)
- 에셋 네이밍 컨벤션 확립 및 적용
  (Data_Skill_, Data_SkillEffect_, Prefab_, Anim_, Model_, BT_ 등)
- pre-commit hook으로 네이밍 컨벤션 자동 검사 추가
- RESTRUCTURE_CHECKLIST.md 작성

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

Assets/External/UI/InterfaceFantasyWarriorHUD/Samples/Scripts/SampleScrollUV.cs

@@ -0,0 +1,50 @@
+// Copyright (c) 2024 Synty Studios Limited. All rights reserved.
+//
+// Use of this software is subject to the terms and conditions of the Synty Studios End User Licence Agreement (EULA)
+// available at: https://syntystore.com/pages/end-user-licence-agreement
+//
+// Sample scripts are included only as examples and are not intended as production-ready.
+
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Synty.Interface.FantasyWarriorHUD.Samples
+{
+    /// <summary>
+    ///     Animates the UVs of a raw image for a scrolling background effect.
+    /// </summary>
+    public class SampleScrollUV : MonoBehaviour
+    {
+        [Header("References")]
+        public RawImage rawImage;
+
+        [Header("Parameters")]
+        public Vector2 speed = new Vector2(1, 0);
+        public Vector2 size = new Vector2(256, 256);
+
+        private void Awake()
+        {
+            if (rawImage == null)
+            {
+                rawImage = GetComponent<RawImage>();
+            }
+        }
+
+        private void Reset()
+        {
+            rawImage = GetComponent<RawImage>();
+        }
+
+        private void Update()
+        {
+            Vector2 calculatedSizeBasedOnScreen = new Vector2(
+                rawImage.rectTransform.rect.width / size.x,
+                rawImage.rectTransform.rect.height / size.y
+            );
+            rawImage.uvRect = new Rect(
+                rawImage.uvRect.position + (speed * Time.deltaTime),
+                calculatedSizeBasedOnScreen
+            );
+        }
+    }
+}