feat: integrate Umami analytics script into root layout

src/app/layout.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import localFont from "next/font/local";
+import Script from "next/script";
 import { SessionProvider } from "@/components/providers/session-provider";
 import { NotificationProvider } from "@/components/providers/notification-provider";
 import "./globals.css";
@@ -138,6 +139,12 @@ export default function RootLayout({
           <NotificationProvider />
           {children}
         </SessionProvider>
+        {/* Umami analytics — loaded after page becomes interactive */}
+        <Script
+          src="https://analytics.superlabs.co/script.js"
+          data-website-id="00e1ce31-e174-4519-8b59-63e8d4556b01"
+          strategy="afterInteractive"
+        />
       </body>
     </html>
   );