feat: Addressables rules/sync tools, UI fixes, AddressKeys update

- Add AddressableRules.cs: single source of truth for prefix->group and prefix->label rules
- Add AddressableRuleSyncWindow.cs: scan/fix/export-CSV tool (BaseGames > Addressables > Rule Sync)
- AddressableBatchTool.cs: delegate DeriveGroupName to AddressableRules, remove duplicate PrefixGroupMap
- AddressKeys.cs: add Labels constants (Preload, Poolable, Enemy, BGM, SFX, Charms, Config, Weapon)
- Docs/Standards/AddressablesLabelSpec.md: new label naming & assignment spec
- Docs/Standards/AssetFolderSpec.md: update Addressables group strategy section
- SplashScreenController.cs: fix MainMenu loading flow
- BootFlowSetupWizard.cs / SceneScaffoldTools.cs: scene scaffold fixes
- PlayerInputActions: set UI/Point to Pass-Through type
- Persistent.unity: add BootSequencer to auto-load MainMenu on play
- EditorBuildSettings.asset: register scenes for build

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Assets/_Game/Scripts/Editor/Addressables/AddressableBatchTool.cs

@@ -40,18 +40,7 @@ namespace BaseGames.Editor
         private bool               _autoGroupByPrefix = true;  // 按 Key 前缀自动选/建分组
 
         // Key 前缀 → 分组名称映射（Tab ① 自动分组用）
-        private static readonly (string Prefix, string GroupName)[] PrefixGroupMap =
-        {
-            ("Scene_",  "Scenes"),
-            ("PLY_",    "Player"),
-            ("ENM_",    "Enemies"),
-            ("PROJ_",   "Projectiles"),
-            ("VFX_",    "VFX"),
-            ("UI_",     "UI"),
-            ("COL_",    "Collectibles"),
-            ("WPN_",    "Weapons"),
-            ("Config/", "Config"),
-        };
+        // 规范数据统一来自 AddressableRules，此处不再声明本地副本。
 
         // Tab ②
         private DefaultAsset      _folderAsset;
@@ -743,12 +732,7 @@ namespace BaseGames.Editor
 
         /// <summary>根据 AddressKey 前缀返回建议分组名，未匹配时返回 null（回退到手动选定分组）。</summary>
         private static string DeriveGroupName(string key)
-        {
-            foreach (var (prefix, groupName) in PrefixGroupMap)
-                if (key.StartsWith(prefix, StringComparison.Ordinal))
-                    return groupName;
-            return null;
-        }
+            => AddressableRules.GetExpectedGroup(key);
 
         private static bool ExactNameMatch(string assetPath, string searchName)
         {