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

src/components/Footer.tsx

@@ -1,6 +1,6 @@
 import { useTranslations } from "@/i18n/utils";
 import type { Lang } from "@/types/i18n";
-import { personalInfo } from "@/lib/data";
+import { personalInfo } from "@/lib/data/index";
 import { motion } from "framer-motion";
 import { useState, useEffect } from "react";
 import { defaultLang } from "@/i18n/ui";

src/components/GlassHeader.tsx

@@ -1,4 +1,4 @@
-import { personalInfo } from "@/lib/data";
+import { personalInfo } from "@/lib/data/index";
 import LanguageSwitcher from "./LanguageSwitcher";
 import ThemeToggle from "./ui/theme-toggle";
 import Container from "./ui/Container";