refactor(data): move data exports to index file

Consolidate data exports from data.ts to index.ts for better organization and maintainability. Remove the now redundant data.ts file.

src/components/AuthorCard.tsx

@@ -1,5 +1,5 @@
 import { type AuthorCardProps } from '@/types';
-import { personalInfo } from '@/lib/data';
+import { personalInfo } from '@/lib/data/index';
 
 export default function AuthorCard({ lang, author }: AuthorCardProps) {
   // Default author info based on personalInfo