Checkpoint 3 & Checkpoint 4：

- GameStateBattle 接入 Simulation 主更新入口
- SimulationWorld 增加开关 UseSimulationMovement（默认 false）
- SimulationWorld.Tick(...) 现在在开关开启时执行敌人追踪/移动模拟，基本还原 MovementComponent 功能（敌人互斥）
- 调整 IEnemySeparationSolver 系列方法，不再依赖 MovementComponent

Assets/GameMain/Scripts/Entity/EntityLogic/Enemy/EnemyBase.cs

@@ -9,4 +9,10 @@ public abstract class EnemyBase : TargetableObject
     public abstract override ImpactData GetImpactData();
 
     public virtual void SetTarget(Transform target) => _target = target;
-}
+
+    protected bool IsSimulationMovementEnabled()
+    {
+        var simulationWorld = GameEntry.SimulationWorld;
+        return simulationWorld != null && simulationWorld.UseSimulationMovement;
+    }
+}

Assets/GameMain/Scripts/Entity/EntityLogic/Enemy/MeleeEnemy.cs

@@ -54,6 +54,11 @@ namespace Entity
 
         protected override void OnUpdate(float elapseSeconds, float realElapseSeconds)
         {
+            if (IsSimulationMovementEnabled())
+            {
+                return;
+            }
+
             base.OnUpdate(elapseSeconds, realElapseSeconds);
 
             if (_target == null)

Assets/GameMain/Scripts/Entity/EntityLogic/Enemy/RemoteEnemy.cs

@@ -50,6 +50,11 @@ namespace Entity
 
         protected override void OnUpdate(float elapseSeconds, float realElapseSeconds)
         {
+            if (IsSimulationMovementEnabled())
+            {
+                return;
+            }
+
             base.OnUpdate(elapseSeconds, realElapseSeconds);
 
             if (_target == null)