Add .node-version file, refactor nextra initialization, and create vercel.json for deployment configuration

Author: sharjeelyunus

.node-version

@@ -0,0 +1,2 @@
+22
+

next.config.js

@@ -1,10 +1,7 @@
-const nextraRaw = require('nextra');
-const nextra = typeof nextraRaw === 'function' ? nextraRaw : nextraRaw.default || nextraRaw;
-
-const withNextra = nextra({
+const withNextra = require('nextra')({
   theme: 'nextra-theme-docs',
   themeConfig: './theme.config.tsx'
-});
+})
 
 module.exports = withNextra({
   async redirects() {

vercel.json

@@ -0,0 +1,5 @@
+{
+  "installCommand": "pnpm install",
+  "buildCommand": "pnpm run build"
+}
+