fix(ai): 应用 Task 1+2 代码审查意见

ResourceFull 未挂 BossResource 时改为显式抛——原先静默返回 false，
是 CLAUDE.md 第 6 条禁止的下游兜底，且与紧邻的 Boss facet 行为不一致。
FakeBossControl.DistanceToAnchor 不再忽略 index。测试改用 TearDown 清理
（本项目关闭了 Domain/Scene Reload，失败断言会把物体永久留在打开的场景里）。
BeginPhaseTransition 去掉死的默认参数；接口补充重入契约说明。

顺带去重：FakeAiContext 实现 IEnemyActor，删除两个测试内的本地 Ctx 副本
——一个接口成员改动要同步三份是复发性成本。

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Assets/Tests/EditMode/AI/PerceptionRecipeSoTests.cs

@@ -7,23 +7,6 @@ namespace BaseGames.Tests.EditMode.AI
 {
     public class PerceptionRecipeSoTests
     {
-        sealed class Ctx : IAiContext, IEnemyActor
-        {
-            public FakeSensor S = new FakeSensor();
-            public FakeLocomotion L = new FakeLocomotion();
-            public FakeCombat C = new FakeCombat();
-            public FakeVitals V = new FakeVitals();
-            public Blackboard BB = new Blackboard();
-            public FakeBossControl B = new FakeBossControl();
-            public ISensor Sensor => S;
-            public IEnemyLocomotion Locomotion => L;
-            public ICombatant Combat => C;
-            public IActorVitals Vitals => V;
-            public Blackboard Blackboard => BB;
-            public IBossControl Boss => B;
-            public bool HasAlertState => true;
-        }
-
         static PerceptionRecipeSO MakeE001Recipe()
         {
             var so = ScriptableObject.CreateInstance<PerceptionRecipeSO>();
@@ -61,7 +44,7 @@ namespace BaseGames.Tests.EditMode.AI
         public void Graph_BehavesLikeE001()
         {
             var so = MakeE001Recipe();
-            var ctx = new Ctx();
+            var ctx = new FakeAiContext();
             var rt = new AiRuntime(so.GetOrBuildGraph(), ctx);
             Assert.AreEqual(DisguiseThenPatrol.Disguise, rt.CurrentStateName);
             ctx.S.Chase = true;