feat: add RAG chat widget for recruiter assistant

app/layout.tsx

@@ -1,4 +1,5 @@
 import type { Metadata } from "next";
+import ChatWidget from "@/components/ChatWidget";
 import { Varela_Round } from "next/font/google";
 import "./globals.css";
 
@@ -31,6 +32,7 @@ export default function RootLayout({
         className={`${varelaRound.variable} antialiased font-varela`}
       >
         {children}
+        <ChatWidget />
       </body>
     </html>
   );