diff --git a/Assets/_Game/Scripts/AI/IActorVitals.cs b/Assets/_Game/Scripts/AI/IActorVitals.cs
new file mode 100644
index 00000000..841f1d89
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/IActorVitals.cs
@@ -0,0 +1,12 @@
+namespace BaseGames.AI
+{
+    /// <summary>生命体征/受控状态接口（第 3 阶段由 VitalsAdapter 适配敌人状态）。</summary>
+    public interface IActorVitals
+    {
+        bool IsAlive { get; }
+        /// <summary>物理态是否为 Controlled——决策层仅在此为真时推进（IsControllable 让位门）。</summary>
+        bool IsControllable { get; }
+        float HpPercent { get; }
+        bool HpBelow(float ratio);
+    }
+}
diff --git a/Assets/_Game/Scripts/AI/IActorVitals.cs.meta b/Assets/_Game/Scripts/AI/IActorVitals.cs.meta
new file mode 100644
index 00000000..1a913730
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/IActorVitals.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9add25f798610d346ad9d65d50775eb4
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Game/Scripts/AI/IAiContext.cs b/Assets/_Game/Scripts/AI/IAiContext.cs
new file mode 100644
index 00000000..b96040fc
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/IAiContext.cs
@@ -0,0 +1,15 @@
+namespace BaseGames.AI
+{
+    /// <summary>
+    /// 传给所有状态回调 / 转换条件的上下文。声明层的 lambda 只能通过它访问实例，
+    /// 不得闭包捕获具体敌人——这是 lambda 挂在共享 AiGraph 上的前提。
+    /// </summary>
+    public interface IAiContext
+    {
+        ISensor Sensor { get; }
+        IMover Mover { get; }
+        ICombatant Combat { get; }
+        IActorVitals Vitals { get; }
+        Blackboard Blackboard { get; }
+    }
+}
diff --git a/Assets/_Game/Scripts/AI/IAiContext.cs.meta b/Assets/_Game/Scripts/AI/IAiContext.cs.meta
new file mode 100644
index 00000000..6fabd5bd
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/IAiContext.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b8fe3f9806c1f644ea3da6d244181b98
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Game/Scripts/AI/ICombatant.cs b/Assets/_Game/Scripts/AI/ICombatant.cs
new file mode 100644
index 00000000..bc60eab0
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/ICombatant.cs
@@ -0,0 +1,11 @@
+namespace BaseGames.AI
+{
+    /// <summary>战斗/能力调度接口（第 3 阶段由 CombatantAdapter 适配能力注册表）。</summary>
+    public interface ICombatant
+    {
+        bool UseAbility(string abilityId);
+        bool IsAbilityRunning(string abilityId = null); // null = 任意能力
+        bool NoAbilityRunning { get; }
+        bool CanUseAbility(string abilityId);
+    }
+}
diff --git a/Assets/_Game/Scripts/AI/ICombatant.cs.meta b/Assets/_Game/Scripts/AI/ICombatant.cs.meta
new file mode 100644
index 00000000..233b60e8
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/ICombatant.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b61b9cf2b94d7ab4c8e16be8cfc19e8d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Game/Scripts/AI/IMover.cs b/Assets/_Game/Scripts/AI/IMover.cs
new file mode 100644
index 00000000..1f6f4d13
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/IMover.cs
@@ -0,0 +1,14 @@
+using UnityEngine;
+
+namespace BaseGames.AI
+{
+    /// <summary>移动能力接口（第 3 阶段由 MoverAdapter 适配移动系统）。</summary>
+    public interface IMover
+    {
+        void MoveTo(Vector2 target);
+        void FacePlayer();
+        void Stop();
+        void WalkRandom();
+        void LookAround();
+    }
+}
diff --git a/Assets/_Game/Scripts/AI/IMover.cs.meta b/Assets/_Game/Scripts/AI/IMover.cs.meta
new file mode 100644
index 00000000..9d6f4070
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/IMover.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bfa62d8e02c8fa644b4c18929b82cbcb
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Game/Scripts/AI/ISensor.cs b/Assets/_Game/Scripts/AI/ISensor.cs
new file mode 100644
index 00000000..7cf45932
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/ISensor.cs
@@ -0,0 +1,13 @@
+using UnityEngine;
+
+namespace BaseGames.AI
+{
+    /// <summary>感知能力接口（第 3 阶段由 SensorAdapter 适配感知系统）。</summary>
+    public interface ISensor
+    {
+        bool SeesPlayer();
+        bool InRange(float range);      // 内部用平方距离比较
+        bool LostFor(float seconds);    // 丢失玩家已持续 seconds
+        Vector2 LastKnown { get; }
+    }
+}
diff --git a/Assets/_Game/Scripts/AI/ISensor.cs.meta b/Assets/_Game/Scripts/AI/ISensor.cs.meta
new file mode 100644
index 00000000..03ddb8ae
--- /dev/null
+++ b/Assets/_Game/Scripts/AI/ISensor.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1e1f4a0222db1794ca4f8ef54b5db3b6
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: