继续收口账号与运行态弹窗壳层

账号设置弹窗复用认证壳层并保留 direct mode 唯一 dialog 语义

拼图运行态新增本地弹窗壳层收口确认设置退出失败和通关结算

抓大鹅与跳一跳结算弹窗提取本地结算结构并补测试

拼图 onboarding 登录保存覆盖层迁入 UnifiedModal

更新 PlatformUiKit 收口文档和 Hermes 决策记录

src/components/common/UnifiedModal.tsx

@@ -41,6 +41,7 @@ type UnifiedModalProps = {
   portal?: boolean;
   zIndexClassName?: string;
   overlayClassName?: string;
+  overlayStyle?: CSSProperties;
   panelClassName?: string;
   headerClassName?: string;
   titleClassName?: string;
@@ -105,6 +106,7 @@ function UnifiedModalContent({
   closeIcon,
   zIndexClassName = 'z-[90]',
   overlayClassName,
+  overlayStyle,
   panelClassName,
   headerClassName,
   titleClassName,
@@ -172,6 +174,7 @@ function UnifiedModalContent({
   return (
     <div
       className={joinClassNames(overlayClasses, zIndexClassName, overlayClassName)}
+      style={overlayStyle}
       onClick={(event) => {
         if (
           closeOnBackdrop &&