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/SampleRadialFillBar.cs

@@ -0,0 +1,86 @@
+// 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 System.Collections;
+using TMPro;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Synty.Interface.FantasyWarriorHUD.Samples
+{
+    /// <summary>
+    ///     A simple radial fill bar that fills and empties.
+    /// </summary>
+    public class SampleRadialFillBar : MonoBehaviour
+    {
+        [Header("References")]
+        public Image image;
+        public TMP_Text text;
+
+        [Header("Parameters")]
+        public float fillAmountFull = 1f;
+        public float inSpeed = 5f;
+        public float outSpeed = 5f;
+        public float startDelay;
+        public float inDelay = 2.5f;
+        public float outDelay = 2.5f;
+        public string labelText = "{0}%";
+
+        public string LabelText => string.Format(labelText, (image.fillAmount / fillAmountFull * 100f).ToString("0"));
+
+        private void Awake()
+        {
+            if (image == null)
+            {
+                image = GetComponentInChildren<Image>();
+            }
+
+            if (text == null)
+            {
+                text = GetComponentInChildren<TMP_Text>();
+            }
+        }
+
+        private void Reset()
+        {
+            image = GetComponentInChildren<Image>();
+            text = GetComponentInChildren<TMP_Text>();
+        }
+
+        private void Start()
+        {
+            StartCoroutine(C_TweenBackAndForth());
+        }
+
+        private IEnumerator C_TweenBackAndForth()
+        {
+            yield return new WaitForSeconds(startDelay);
+
+            while (true)
+            {
+                yield return C_TweenFloat(0, 1, inSpeed);
+                yield return new WaitForSeconds(outDelay);
+                yield return C_TweenFloat(1, 0, outSpeed);
+                yield return new WaitForSeconds(inDelay);
+            }
+        }
+
+        private IEnumerator C_TweenFloat(float startValue, float endValue, float duration)
+        {
+            float time = 0f;
+            while (time < 1f)
+            {
+                time += Time.deltaTime / duration;
+                float currentValue = Mathf.Lerp(startValue, endValue, time);
+
+                image.fillAmount = currentValue * fillAmountFull;
+                text?.SetText(LabelText);
+                yield return null;
+            }
+        }
+    }
+}