refactor(guide): always redirect to introduction

apps/guide/src/middleware.ts

@@ -0,0 +1,9 @@
+import { NextResponse, type NextRequest } from 'next/server';
+
+export default async function middleware(request: NextRequest) {
+	return NextResponse.redirect(new URL('/guide/home/introduction', request.url));
+}
+
+export const config = {
+	matcher: ['/'],
+};