UI换了很多，spine主视觉停用

Assets/scripts/UI/Navigation/UIBackStack.cs

@@ -0,0 +1,157 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+public static class UIBackStack
+{
+    private sealed class Entry
+    {
+        public UnityEngine.Object owner;
+        public Func<bool> canHandle;
+        public Func<bool> handleBack;
+        public long sequence;
+    }
+
+    private static readonly List<Entry> entries = new List<Entry>();
+    private static long nextSequence;
+    private static bool hookedSceneEvents;
+
+    public static void RegisterOrBump(UnityEngine.Object owner, Func<bool> canHandle, Func<bool> handleBack)
+    {
+        if (owner == null || handleBack == null)
+        {
+            return;
+        }
+
+        EnsureSceneHook();
+        PurgeInvalidEntries();
+
+        for (int i = 0; i < entries.Count; i++)
+        {
+            Entry existing = entries[i];
+            if (ReferenceEquals(existing.owner, owner))
+            {
+                existing.canHandle = canHandle;
+                existing.handleBack = handleBack;
+                existing.sequence = ++nextSequence;
+                return;
+            }
+        }
+
+        entries.Add(new Entry
+        {
+            owner = owner,
+            canHandle = canHandle,
+            handleBack = handleBack,
+            sequence = ++nextSequence
+        });
+    }
+
+    public static void Unregister(UnityEngine.Object owner)
+    {
+        if (owner == null)
+        {
+            return;
+        }
+
+        for (int i = entries.Count - 1; i >= 0; i--)
+        {
+            if (ReferenceEquals(entries[i].owner, owner))
+            {
+                entries.RemoveAt(i);
+            }
+        }
+    }
+
+    public static bool TryHandleTop()
+    {
+        EnsureSceneHook();
+        PurgeInvalidEntries();
+
+        entries.Sort((a, b) => a.sequence.CompareTo(b.sequence));
+
+        for (int i = entries.Count - 1; i >= 0; i--)
+        {
+            Entry entry = entries[i];
+            if (!CanEntryHandle(entry))
+            {
+                continue;
+            }
+
+            try
+            {
+                if (entry.handleBack())
+                {
+                    PurgeInvalidEntries();
+                    return true;
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.LogWarning($"[UIBackStack] HandleBack failed: {ex.Message}");
+            }
+        }
+
+        PurgeInvalidEntries();
+        return false;
+    }
+
+    private static bool CanEntryHandle(Entry entry)
+    {
+        if (entry == null || entry.owner == null)
+        {
+            return false;
+        }
+
+        try
+        {
+            return entry.canHandle == null || entry.canHandle();
+        }
+        catch (Exception ex)
+        {
+            Debug.LogWarning($"[UIBackStack] CanHandle failed: {ex.Message}");
+            return false;
+        }
+    }
+
+    private static void PurgeInvalidEntries()
+    {
+        for (int i = entries.Count - 1; i >= 0; i--)
+        {
+            Entry entry = entries[i];
+            if (entry == null || entry.owner == null)
+            {
+                entries.RemoveAt(i);
+                continue;
+            }
+
+            if (entry.owner is Behaviour behaviour && behaviour.gameObject == null)
+            {
+                entries.RemoveAt(i);
+                continue;
+            }
+
+            if (entry.owner is GameObject ownerGo && ownerGo == null)
+            {
+                entries.RemoveAt(i);
+            }
+        }
+    }
+
+    private static void EnsureSceneHook()
+    {
+        if (hookedSceneEvents)
+        {
+            return;
+        }
+
+        hookedSceneEvents = true;
+        SceneManager.sceneLoaded += HandleSceneLoaded;
+    }
+
+    private static void HandleSceneLoaded(Scene scene, LoadSceneMode mode)
+    {
+        PurgeInvalidEntries();
+    }
+}

Assets/scripts/UI/Navigation/UIBackStack.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: a260537100e6b8f48971e79e1f97c306