refactor(profile): centralize personal info in data module and update components

Move all personal information to a centralized data module and update components to use this source. This improves maintainability by having a single source of truth for profile data and makes it easier to update information across the application.

src/components/AuthorCard.tsx

@@ -1,4 +1,5 @@
 import type { Lang } from '../i18n/utils';
+import { personalInfo } from '@/lib/data';
 
 interface AuthorCardProps {
   lang: Lang;
@@ -14,17 +15,17 @@ interface AuthorCardProps {
 }
 
 export default function AuthorCard({ lang, author }: AuthorCardProps) {
-  // Default author info
+  // Default author info based on personalInfo
   const defaultAuthor = {
-    name: 'Zhao Guiyang',
+    name: personalInfo.name,
     bio: lang === 'zh' 
-      ? '全栈开发者，专注于现代Web技术和用户体验设计。热爱分享技术见解和最佳实践。'
-      : 'Full-stack developer passionate about modern web technologies and user experience design. Love sharing technical insights and best practices.',
-    avatar: 'https://avatars.githubusercontent.com/u/24975063?v=4', // You can replace with actual avatar
-    website: 'https://zhaoguiyang.com',
-    github: 'https://github.com/zhaoguiyang',
-    twitter: 'https://twitter.com/zhaoguiyang',
-    linkedin: 'https://linkedin.com/in/zhaoguiyang'
+      ? personalInfo.description.zh
+      : personalInfo.description.en,
+    avatar: personalInfo.avatar, 
+    website: personalInfo.website || 'https://zhaoguiyang.com',
+    github: personalInfo.github,
+    twitter: personalInfo.twitter || 'https://twitter.com/zhaoguiyang',
+    linkedin: personalInfo.linkedin
   };
 
   const authorInfo = author || defaultAuthor;