[Stats] 캐릭터 스탯 시스템 구현

- 6가지 기본 스탯 추가 (STR, DEX, INT, VIT, WIS, SPI)
- 스탯 수정자 시스템 (Flat, PercentAdd, PercentMult)
- 파생 스탯 계산 (체력/마나/대미지/회복력)
- 스킬 효과에 스탯 기반 대미지/회복량 적용
- 마나 비용 체크 및 소모 로직 추가

Assets/Scripts/Player/PlayerNetworkController.cs

@@ -1,5 +1,6 @@
 using UnityEngine;
 using Unity.Netcode;
+using Colosseum.Stats;
 
 namespace Colosseum.Player
 {
@@ -8,26 +9,33 @@ namespace Colosseum.Player
     /// </summary>
     public class PlayerNetworkController : NetworkBehaviour
     {
-        [Header("Stats")]
-        [SerializeField] private float maxHealth = 100f;
-        [SerializeField] private float maxMana = 50f;
+        [Header("References")]
+        [Tooltip("CharacterStats 컴포넌트 (없으면 자동 검색)")]
+        [SerializeField] private CharacterStats characterStats;
 
         // 네트워크 동기화 변수
         private NetworkVariable<float> currentHealth = new NetworkVariable<float>(100f);
         private NetworkVariable<float> currentMana = new NetworkVariable<float>(50f);
 
         public float Health => currentHealth.Value;
-        public float MaxHealth => maxHealth;
         public float Mana => currentMana.Value;
-        public float MaxMana => maxMana;
+        public float MaxHealth => characterStats != null ? characterStats.MaxHealth : 100f;
+        public float MaxMana => characterStats != null ? characterStats.MaxMana : 50f;
+        public CharacterStats Stats => characterStats;
 
         public override void OnNetworkSpawn()
         {
+            // CharacterStats 참조 확인
+            if (characterStats == null)
+            {
+                characterStats = GetComponent<CharacterStats>();
+            }
+
             // 초기화
             if (IsServer)
             {
-                currentHealth.Value = maxHealth;
-                currentMana.Value = maxMana;
+                currentHealth.Value = MaxHealth;
+                currentMana.Value = MaxMana;
             }
         }
 
@@ -54,13 +62,22 @@ namespace Colosseum.Player
             currentMana.Value = Mathf.Max(0f, currentMana.Value - amount);
         }
 
+        /// <summary>
+        /// 체력 회복 (서버에서만 실행)
+        /// </summary>
+        [Rpc(SendTo.Server)]
+        public void RestoreHealthRpc(float amount)
+        {
+            currentHealth.Value = Mathf.Min(MaxHealth, currentHealth.Value + amount);
+        }
+
         /// <summary>
         /// 마나 회복 (서버에서만 실행)
         /// </summary>
         [Rpc(SendTo.Server)]
         public void RestoreManaRpc(float amount)
         {
-            currentMana.Value = Mathf.Min(maxMana, currentMana.Value + amount);
+            currentMana.Value = Mathf.Min(MaxMana, currentMana.Value + amount);
         }
 
         private void HandleDeath()