feat: 플레이어 다운 및 넉백 피격 반응 추가

- HitReactionController로 다운과 넉백 전용 로직을 분리
- 다운 시작, 루프, 회복 애니메이션과 DownEffect를 연결
- 행동 상태와 스킬 취소가 피격 반응과 연동되도록 정리
- 자동 검증 러너에 다운 및 넉백 검증을 추가

Assets/_Game/Scripts/Player/PlayerActionState.cs

@@ -22,6 +22,9 @@ namespace Colosseum.Player
         [Tooltip("스킬 실행 관리자")]
         [SerializeField] private SkillController skillController;
 
+        [Tooltip("피격 제어 관리자")]
+        [SerializeField] private HitReactionController hitReactionController;
+
         [Tooltip("관전 관리자")]
         [SerializeField] private PlayerSpectator spectator;
 
@@ -35,6 +38,11 @@ namespace Colosseum.Player
         /// </summary>
         public bool IsStunned => abnormalityManager != null && abnormalityManager.IsStunned;
 
+        /// <summary>
+        /// 다운 상태 여부
+        /// </summary>
+        public bool IsDowned => hitReactionController != null && hitReactionController.IsDowned;
+
         /// <summary>
         /// 침묵 상태 여부
         /// </summary>
@@ -68,17 +76,17 @@ namespace Colosseum.Player
         /// <summary>
         /// 플레이어가 직접 이동 입력을 사용할 수 있는지 여부
         /// </summary>
-        public bool CanMove => CanReceiveInput && !IsStunned && !BlocksMovementForCurrentSkill();
+        public bool CanMove => CanReceiveInput && !IsStunned && !IsDowned && !BlocksMovementForCurrentSkill();
 
         /// <summary>
         /// 점프 가능 여부
         /// </summary>
-        public bool CanJump => CanReceiveInput && !IsStunned && !BlocksJumpForCurrentSkill();
+        public bool CanJump => CanReceiveInput && !IsStunned && !IsDowned && !BlocksJumpForCurrentSkill();
 
         /// <summary>
         /// 일반 스킬 시작 가능 여부
         /// </summary>
-        public bool CanUseSkills => CanReceiveInput && !IsStunned && !IsSilenced && !BlocksSkillUseForCurrentSkill();
+        public bool CanUseSkills => CanReceiveInput && !IsStunned && !IsDowned && !IsSilenced && !BlocksSkillUseForCurrentSkill();
 
         /// <summary>
         /// 특정 스킬의 시작 가능 여부.
@@ -89,7 +97,7 @@ namespace Colosseum.Player
             if (skill == null)
                 return false;
 
-            if (!CanReceiveInput || IsStunned || IsSilenced)
+            if (!CanReceiveInput || IsStunned || IsDowned || IsSilenced)
                 return false;
 
             return !BlocksSkillUseForCurrentSkill();
@@ -102,7 +110,7 @@ namespace Colosseum.Player
         {
             get
             {
-                if (!CanReceiveInput || IsStunned)
+                if (!CanReceiveInput || IsStunned || IsDowned)
                     return 0f;
 
                 return abnormalityManager != null ? abnormalityManager.MoveSpeedMultiplier : 1f;
@@ -117,6 +125,8 @@ namespace Colosseum.Player
                 abnormalityManager = GetComponent<AbnormalityManager>();
             if (skillController == null)
                 skillController = GetComponent<SkillController>();
+            if (hitReactionController == null)
+                hitReactionController = GetOrCreateHitReactionController();
             if (spectator == null)
                 spectator = GetComponentInChildren<PlayerSpectator>();
         }
@@ -144,5 +154,14 @@ namespace Colosseum.Player
 
             return CurrentSkill == null || CurrentSkill.BlockOtherSkillsWhileCasting;
         }
+
+        private HitReactionController GetOrCreateHitReactionController()
+        {
+            HitReactionController foundController = GetComponent<HitReactionController>();
+            if (foundController != null)
+                return foundController;
+
+            return gameObject.AddComponent<HitReactionController>();
+        }
     }
 }