UI相关优化补充

Assets/Tests/PlayMode/UIManagerSmokeTest.cs

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+using System.Collections;
+using NUnit.Framework;
+using UnityEngine;
+using UnityEngine.TestTools;
+using BaseGames.UI;
+
+namespace BaseGames.Tests.PlayMode
+{
+    /// <summary>
+    /// UIManager 烟雾测试：验证面板栈基本不变式。
+    ///
+    /// 覆盖：
+    ///   · OpenPanel → CloseTopPanel 后栈为空；
+    ///   · 嵌套打开（A → B → CloseTop）后 A 仍处于激活态；
+    ///   · 重复 OpenPanel 同一面板不会双压栈（HashSet 去重）。
+    ///
+    /// 注：测试只覆盖框架行为，不验证业务面板（CharmPanel 等）的内部逻辑。
+    /// </summary>
+    public class UIManagerSmokeTest
+    {
+        private GameObject _hostGO;
+        private UIManager  _manager;
+        private GameObject _panelA;
+        private GameObject _panelB;
+
+        [SetUp]
+        public void SetUp()
+        {
+            _hostGO  = new GameObject("UIManager_Host");
+            _manager = _hostGO.AddComponent<UIManager>();
+            _panelA  = new GameObject("PanelA");
+            _panelB  = new GameObject("PanelB");
+            _panelA.SetActive(false);
+            _panelB.SetActive(false);
+
+            // 强制 OnEnable 触发（AddComponent 同帧已触发，这里二次启用保证 ServiceLocator 状态）
+            _hostGO.SetActive(false);
+            _hostGO.SetActive(true);
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            Object.DestroyImmediate(_panelA);
+            Object.DestroyImmediate(_panelB);
+            Object.DestroyImmediate(_hostGO);
+        }
+
+        [UnityTest]
+        public IEnumerator OpenThenCloseTop_PanelDeactivated()
+        {
+            _manager.OpenPanel(_panelA);
+            yield return null;
+
+            Assert.IsTrue(_panelA.activeSelf, "OpenPanel 应当激活面板");
+
+            _manager.CloseTopPanel();
+            yield return null;
+
+            Assert.IsFalse(_panelA.activeSelf, "CloseTopPanel 应当反激活栈顶面板");
+        }
+
+        [UnityTest]
+        public IEnumerator NestedOpen_PreviousPanelHiddenAndRestored()
+        {
+            _manager.OpenPanel(_panelA);
+            _manager.OpenPanel(_panelB);
+            yield return null;
+
+            Assert.IsFalse(_panelA.activeSelf, "嵌套打开时上一层应被隐藏");
+            Assert.IsTrue(_panelB.activeSelf,  "新打开的面板应当激活");
+
+            _manager.CloseTopPanel();
+            yield return null;
+
+            Assert.IsTrue(_panelA.activeSelf,  "关闭栈顶后上一层应当恢复");
+            Assert.IsFalse(_panelB.activeSelf, "关闭后栈顶面板应当反激活");
+        }
+
+        [UnityTest]
+        public IEnumerator DoubleOpenSamePanel_NoStackDuplication()
+        {
+            _manager.OpenPanel(_panelA);
+            _manager.OpenPanel(_panelA);
+            yield return null;
+
+            // 关闭一次后栈应为空
+            _manager.CloseTopPanel();
+            yield return null;
+
+            Assert.IsFalse(_panelA.activeSelf, "重复打开应被去重；关闭一次后即应隐藏");
+        }
+    }
+}