refactor(glass): 批次1 - 迁移全局组件使用统一毛玻璃配置

迁移以下 10 个组件使用 glassConfig.ts 统一配置:
- GlassCard: GLASS_BLUR/GLASS_SHADOW 替换硬编码 blur/glow
- SubTabContainer: GLASS_BLUR.lg 替换 blur(20px)
- HomeNavbar: GLASS_BLUR.sm 替换 blur(10px)
- AuthModalManager: GLASS_BLUR.sm 替换 blur(10px)
- WechatRegister: GLASS_BLUR.xs 替换 blur(4px)
- SubscriptionModal: GLASS_BLUR.xs 替换 blur(4px)
- SubscriptionContentNew: GLASS_BLUR.sm/lg/xl 替换多处硬编码
- ImageLightbox: GLASS_BLUR.sm 替换 blur(10px)
- ImagePreviewModal: GLASS_BLUR.sm 替换 blur(10px)
- FuiContainer: GLASS_BLUR.md 替换 blur(16px)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/components/FUI/FuiContainer.tsx

@@ -6,6 +6,7 @@
 import React, { memo, ReactNode } from 'react';
 import { Box, BoxProps } from '@chakra-ui/react';
 import FuiCorners, { FuiCornersProps } from './FuiCorners';
+import { GLASS_BLUR } from '@/constants/glassConfig';
 
 export interface FuiContainerProps extends Omit<BoxProps, 'children'> {
   children: ReactNode;
@@ -73,7 +74,7 @@ const FuiContainer = memo<FuiContainerProps>(({
       border="1px solid"
       borderColor={theme.borderColor}
       overflow="hidden"
-      backdropFilter="blur(16px)"
+      backdropFilter={GLASS_BLUR.md}
       boxShadow={theme.boxShadow}
       {...boxProps}
     >