diff --git a/Assets/Scripts/Gameplay/EnemyDeath.cs b/Assets/Scripts/Gameplay/EnemyDeath.cs
index a60c279..3c17fc1 100644
--- a/Assets/Scripts/Gameplay/EnemyDeath.cs
+++ b/Assets/Scripts/Gameplay/EnemyDeath.cs
@@ -14,6 +14,10 @@ namespace Platformer.Gameplay
 
         public override void Execute()
         {
+            // BT12-Dev 진단 (2026-05-10 PD A+B) — EnemyDeath.Execute 호출 검증.
+            // 회수: PD 사망 원인 확정 후 본 PM revert commit.
+            Debug.Log($"[EnemyDeath][Execute] enemy={(enemy != null ? enemy.name : "NULL")} collider={(enemy != null && enemy._collider != null ? enemy._collider.enabled.ToString() : "NULL")} t={Time.time:F2}");
+
             if (enemy == null) return;
 
             // 충돌·이동·patrol 영역 비활성
diff --git a/Assets/Scripts/Mechanics/AttackHitbox.cs b/Assets/Scripts/Mechanics/AttackHitbox.cs
index 6c3c32a..c71da6c 100644
--- a/Assets/Scripts/Mechanics/AttackHitbox.cs
+++ b/Assets/Scripts/Mechanics/AttackHitbox.cs
@@ -70,6 +70,9 @@ namespace Platformer.Mechanics
                 if (!health.IsAlive)
                 {
                     var enemy = col.GetComponent<EnemyController>();
+                    // BT12-Dev 진단 (2026-05-10 PD A+B) — EnemyDeath schedule 호출 검증.
+                    // 회수: PD 사망 원인 확정 후 본 PM revert commit.
+                    Debug.Log($"[AttackHitbox][Schedule] col={col.name} enemy={(enemy != null ? enemy.name : "NULL")} hp={health.CurrentHP} t={Time.time:F2}");
                     if (enemy != null)
                     {
                         Schedule<EnemyDeath>().enemy = enemy;