refactor(types): centralize type definitions in shared types file

Move all interface and type definitions to src/types/index.ts to reduce code duplication and improve maintainability. This includes types for components, blog posts, personal info, and localization.

src/components/GlassHeader.tsx

@@ -3,13 +3,12 @@ import LanguageSwitcher from "./LanguageSwitcher";
 import ThemeToggle from "./ui/theme-toggle";
 import { useTranslations, getLocalizedPath, type Lang } from "@/i18n/utils";
 import { useState, useEffect } from "react";
+import { motion, AnimatePresence } from "framer-motion";
 import { Menu, X } from "lucide-react";
 import { defaultLang } from "@/i18n/ui";
+import { type GlassHeaderProps } from "@/types";
 
 // 从window.document.documentElement.lang获取当前语言
-interface GlassHeaderProps {
-  lang?: Lang;
-}
 
 export default function GlassHeader({ lang: propLang }: GlassHeaderProps) {
   // 优先使用props传入的语言，如果没有则尝试从HTML lang属性获取