diff --git a/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IDeathModule.cs b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IDeathModule.cs
new file mode 100644
index 00000000..10a758a8
--- /dev/null
+++ b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IDeathModule.cs
@@ -0,0 +1,16 @@
+using BaseGames.AI;
+
+namespace BaseGames.Enemies
+{
+    /// <summary>
+    /// 死亡层：单态终结（演出交给物理状态机）/ 单段死亡能力 / 两段演出（可带生成物）。
+    /// 骨架只挂一条 Global → EntryState 的 Died 事件边，链条内容全归本模块。
+    /// </summary>
+    public interface IDeathModule
+    {
+        void Build(BrainBuilder b);
+
+        /// <summary>骨架全局死亡边指向的态。</summary>
+        string EntryState { get; }
+    }
+}
diff --git a/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IDeathModule.cs.meta b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IDeathModule.cs.meta
new file mode 100644
index 00000000..449f7816
--- /dev/null
+++ b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IDeathModule.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ca95968c577c65244bfb6c5a9a908ef4
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IEngagementModule.cs b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IEngagementModule.cs
new file mode 100644
index 00000000..b2139d00
--- /dev/null
+++ b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IEngagementModule.cs
@@ -0,0 +1,31 @@
+using System;
+using BaseGames.AI;
+
+namespace BaseGames.Enemies
+{
+    /// <summary>
+    /// 交战层：发现玩家之后怎么打。骨架只认这四件事——从哪个态进、什么条件进、
+    /// 边标签是什么、内部怎么打。新增一种打法 = 新增一个实现，骨架与其他模块不受影响。
+    ///
+    /// CanEngage 归本模块所有是关键：像"冲锋冷却门"这种只对某一种打法有意义的条件，
+    /// 若留在骨架上就会变成骨架的开关字段，并与其他开关互相耦合。
+    ///
+    /// 实现注意：模块会经 [SerializeReference] 反序列化，构造函数不保证被调用。
+    /// 不要在构造函数里预计算缓存或做参数校验——缓存用惰性属性，校验放 Build()。
+    /// </summary>
+    public interface IEngagementModule
+    {
+        /// <summary>声明交战态与脱战边。</summary>
+        /// <param name="rest">脱战后回到的未发现态，由骨架传入。</param>
+        void Build(BrainBuilder b, string rest);
+
+        /// <summary>骨架从未发现态 / 警觉态连过来的目标。</summary>
+        string EntryState { get; }
+
+        /// <summary>进入交战的条件。惰性构建并缓存。</summary>
+        Func<IAiContext, bool> CanEngage { get; }
+
+        /// <summary>CanEngage 的可读标签（trace / 图导出用）。</summary>
+        string EngageLabel { get; }
+    }
+}
diff --git a/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IEngagementModule.cs.meta b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IEngagementModule.cs.meta
new file mode 100644
index 00000000..c7640663
--- /dev/null
+++ b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IEngagementModule.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 0941f7f7a28a5374fbfd2971bde2ef54
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IUnawareModule.cs b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IUnawareModule.cs
new file mode 100644
index 00000000..eda45fe4
--- /dev/null
+++ b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IUnawareModule.cs
@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+using BaseGames.AI;
+
+namespace BaseGames.Enemies
+{
+    /// <summary>
+    /// 未发现层：玩家尚未被发现时的行为形状（单一站桩 / 单向降级 / 定时交替 …）。
+    ///
+    /// 刻意拆成两阶段：AiRuntime 按声明顺序评估条件边，若本模块的内部边（如巡逻计时）
+    /// 早于骨架的升级边声明，玩家进入追逐区那一帧若恰好计时到点，敌人会切去另一个待机态
+    /// 而不是扑上来。骨架的调用顺序固定为 Declare → 挂升级边 → Link。
+    /// </summary>
+    public interface IUnawareModule
+    {
+        /// <summary>只声明状态与行为回调，不挂任何转换。</summary>
+        void Declare(BrainBuilder b);
+
+        /// <summary>挂内部转换（如站立 ⇄ 巡逻的计时边）。没有内部边的模块留空实现。</summary>
+        void Link(BrainBuilder b);
+
+        /// <summary>图入口（出生态）。</summary>
+        string Entry { get; }
+
+        /// <summary>脱战 / 警觉丢失后回到的态。必须属于 States。</summary>
+        string Rest { get; }
+
+        /// <summary>需要挂升级边的所有未发现态。</summary>
+        IReadOnlyList<string> States { get; }
+    }
+}
diff --git a/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IUnawareModule.cs.meta b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IUnawareModule.cs.meta
new file mode 100644
index 00000000..fa7be118
--- /dev/null
+++ b/Assets/_Game/Scripts/Enemies/AIBrain/Modules/IUnawareModule.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bad88c851589dbe4fa0efbb66331e399
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: