feat: 드로그 보스 AI 및 런타임 상태 구조 재구성

- 드로그 전투 컨텍스트를 BossBehaviorRuntimeState 중심 구조로 정리하고 BossEnemy, 패턴 액션, 조건 노드가 마지막 실행 결과와 phase 상태를 직접 사용하도록 갱신
- BT_Drog와 재빌드 에디터 스크립트를 확장해 phase 전환, 집행 결과 분기, 거리/쿨타임 기반 패턴 선택을 드로그 전용 자산과 노드 파라미터로 재구성
- 드로그 패턴/스킬/이펙트/애니메이션 플레이스홀더 자산을 재생성하고 보스 프리팹이 새 런타임 상태 및 등록 클립 구성을 참조하도록 정리

Assets/_Game/Scripts/AI/BehaviorActions/Actions/RefreshPrimaryTargetAction.cs

@@ -1,6 +1,8 @@
 using System;
 
+using Colosseum;
 using Colosseum.Enemy;
+using Colosseum.Player;
 
 using Unity.Behavior;
 using Unity.Properties;
@@ -22,10 +24,13 @@ public partial class RefreshPrimaryTargetAction : Action
     [SerializeReference]
     public BlackboardVariable<GameObject> Target;
 
+    [SerializeReference]
+    public BlackboardVariable<float> SearchRange = new BlackboardVariable<float>(0f);
+
     protected override Status OnStart()
     {
-        BossCombatBehaviorContext context = GameObject.GetComponent<BossCombatBehaviorContext>();
-        if (context != null && context.IsBehaviorSuppressed)
+        BossBehaviorRuntimeState runtimeState = GameObject.GetComponent<BossBehaviorRuntimeState>();
+        if (runtimeState != null && runtimeState.IsBehaviorSuppressed)
             return Status.Failure;
 
         EnemyBase enemyBase = GameObject.GetComponent<EnemyBase>();
@@ -33,17 +38,55 @@ public partial class RefreshPrimaryTargetAction : Action
             return Status.Failure;
 
         GameObject currentTarget = Target != null ? Target.Value : null;
-        float aggroRange = enemyBase.Data != null ? enemyBase.Data.AggroRange : Mathf.Infinity;
-        GameObject resolvedTarget = enemyBase.GetHighestThreatTarget(currentTarget, null, aggroRange);
+        float searchRange = ResolveSearchRange(enemyBase);
+        GameObject resolvedTarget = enemyBase.GetHighestThreatTarget(currentTarget, null, searchRange);
 
         if (resolvedTarget == null)
-        {
-            resolvedTarget = context != null ? context.FindNearestLivingTarget() : null;
-        }
+            resolvedTarget = FindNearestLivingTarget(enemyBase, currentTarget, searchRange);
 
         if (Target != null)
             Target.Value = resolvedTarget;
 
+        runtimeState?.SetCurrentTarget(resolvedTarget);
+        runtimeState?.LogDebug(nameof(RefreshPrimaryTargetAction), resolvedTarget != null
+            ? $"주 대상 갱신: {resolvedTarget.name}"
+            : "주 대상 갱신 실패");
+
         return resolvedTarget != null ? Status.Success : Status.Failure;
     }
+
+    private float ResolveSearchRange(EnemyBase enemyBase)
+    {
+        if (SearchRange != null && SearchRange.Value > 0f)
+            return SearchRange.Value;
+
+        return enemyBase != null && enemyBase.Data != null ? enemyBase.Data.AggroRange : Mathf.Infinity;
+    }
+
+    private GameObject FindNearestLivingTarget(EnemyBase enemyBase, GameObject currentTarget, float searchRange)
+    {
+        PlayerNetworkController[] players = UnityEngine.Object.FindObjectsByType<PlayerNetworkController>(FindObjectsSortMode.None);
+        GameObject nearestTarget = null;
+        float nearestDistance = float.MaxValue;
+
+        for (int i = 0; i < players.Length; i++)
+        {
+            PlayerNetworkController player = players[i];
+            if (player == null || player.IsDead || !player.gameObject.activeInHierarchy)
+                continue;
+
+            GameObject candidate = player.gameObject;
+            if (Team.IsSameTeam(GameObject, candidate))
+                continue;
+
+            float distance = Vector3.Distance(GameObject.transform.position, candidate.transform.position);
+            if (distance > searchRange || distance >= nearestDistance)
+                continue;
+
+            nearestDistance = distance;
+            nearestTarget = candidate;
+        }
+
+        return nearestTarget != null ? nearestTarget : currentTarget;
+    }
 }