UI系统

Assets/_Game/Scripts/UI/Navigation/UIStackEntry.cs

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+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace BaseGames.UI
+{
+    /// <summary>
+    /// 导航栈中一层的记录。<see cref="FocusToRestore"/> 记录压栈前的选中项，
+    /// 出栈时据此恢复键盘 / 手柄焦点；<see cref="OwningScene"/> 用于场景卸载时清理本层。
+    /// </summary>
+    internal sealed class UIStackEntry
+    {
+        public UIPanelBase Panel;
+        public GameObject  FocusToRestore;
+        public PushMode    Mode;
+        public Scene       OwningScene;
+    }
+}