refactor: 드로그 BT 의사결정 투명화 — 모든 조건을 BT 노드로 표시

- BossCombatPatternRole enum 완전 제거, BossPatternData에 직접 필드 추가
- 14개 패턴별 Check*/Use*Action → CheckPatternReadyCondition + UsePatternByRoleAction으로 통합
- BT 계단식 Branch 체인 구조 도입 (BranchingConditionComposite + FloatingPort)
- 패턴별 고유 전제 조건을 BT Condition으로 분리
  - Punish: IsDownedTargetInRangeCondition (다운 대상 반경)
  - Mobility: IsTargetBeyondDistanceCondition (원거리 대상)
  - Utility: IsTargetBeyondDistanceCondition (원거리 대상)
  - Primary: IsTargetInAttackRangeCondition (사거리 이내)
- Phase 진입 조건을 BT에서 확인 가능하도록 IsMinPhaseSatisfiedCondition 추가
- IsPatternReady()에서 minPhase 체크 분리 → 전용 Condition으로 노출
- Secondary 패턴 개념 제거 (secondaryPattern, 보조 차례, 교대 카운터 로직 전부 삭제)
- CanResolvePatternTargetCondition 삭제 (7개 중 5개가 노이즈)
- RebuildDrogBehaviorAuthoringGraph로 BT 에셋 자동 재구성 메뉴 제공

Assets/_Game/Prefabs/Bosses/Prefab_Boss_Drog.prefab

@@ -2001,7 +2001,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: d5a57f767e5e46a458fc5d3c628d0cbb, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Unity.Netcode.Runtime::Unity.Netcode.NetworkObject
-  GlobalObjectIdHash: 860882280
+  GlobalObjectIdHash: 223369646
   InScenePlacedSourceGlobalObjectIdHash: 223369646
   DeferredDespawnTick: 0
   Ownership: 1
@@ -2030,11 +2030,13 @@ MonoBehaviour:
   characterStats: {fileID: -5454809204868423215}
   animator: {fileID: 4019041888965840580}
   navMeshAgent: {fileID: 5153439431748782209}
+  abnormalityManager: {fileID: 0}
   enemyData: {fileID: 11400000, guid: f21773b42c60c4b40b609966f09146aa, type: 2}
   useThreatSystem: 1
   damageThreatMultiplier: 1
   threatDecayPerSecond: 0
   retargetThreshold: 0
+  shieldStateAbnormality: {fileID: 0}
   phases: []
   initialBehaviorGraph: {fileID: -3933356984444701103, guid: 9ade9280028e9da4aa0151fe8e9ec454, type: 2}
   phaseTransitionInvincibilityTime: 2
@@ -2185,23 +2187,26 @@ MonoBehaviour:
   bossEnemy: {fileID: 6949205239376088310}
   enemyBase: {fileID: 6949205239376088310}
   skillController: {fileID: 8818883032728065057}
+  abnormalityManager: {fileID: 0}
   navMeshAgent: {fileID: 5153439431748782209}
-  mainPattern: {fileID: 11400000, guid: 5efd8123be76bf844875d386d9d5f73d, type: 2}
-  slamPattern: {fileID: 11400000, guid: 4a52d59d590b4eaa9ef92b7984eb08c7, type: 2}
-  leapPattern: {fileID: 11400000, guid: 88e6cc7cab28baf4c8f8a742247000ec, type: 2}
+  behaviorGraphAgent: {fileID: 0}
+  primaryPattern: {fileID: 11400000, guid: 5efd8123be76bf844875d386d9d5f73d, type: 2}
+  secondaryPattern: {fileID: 11400000, guid: 4a52d59d590b4eaa9ef92b7984eb08c7, type: 2}
+  mobilityPattern: {fileID: 11400000, guid: 88e6cc7cab28baf4c8f8a742247000ec, type: 2}
   utilityPattern: {fileID: 11400000, guid: 9f7ab8078af64fd9a6ff4c9ce6aa9d3a, type: 2}
-  downPunishPattern: {fileID: 11400000, guid: fe5100f855d14c0faac44b6d4f2c771e, type: 2}
+  comboPattern: {fileID: 0}
+  punishPattern: {fileID: 11400000, guid: fe5100f855d14c0faac44b6d4f2c771e, type: 2}
   signaturePattern: {fileID: 11400000, guid: 5e732b41722c45288bb6234f3e3fa638, type: 2}
   phase2HealthThreshold: 0.75
   phase3HealthThreshold: 0.4
-  targetRefreshInterval: 0.2
-  leapDistanceThreshold: 8
-  downPunishSearchRadius: 6
+  primaryTargetRefreshInterval: 0.2
+  mobilityTriggerDistance: 8
+  punishSearchRadius: 6
   utilityTriggerDistance: 5
-  phase1SlamInterval: 3
-  phase2SlamInterval: 2
-  phase3SlamInterval: 2
-  signatureMinPhase: 2
+  phase1SecondaryInterval: 3
+  phase2SecondaryInterval: 2
+  phase3SecondaryInterval: 2
+  basicLoopMinCountAfterBigPattern: 2
   signatureRequiredDamageRatio: 0.1
   signatureTelegraphAbnormality: {fileID: 11400000, guid: fb1a782e44ff4dc19fd8b3c633360752, type: 2}
   signatureSuccessStaggerDuration: 2