phase3-4 done

src/app/layout.tsx

@@ -1,4 +1,5 @@
 import type { Metadata } from "next";
+import Script from "next/script";
 import "./globals.css";
 
 export const metadata: Metadata = {
@@ -10,10 +11,26 @@ export const metadata: Metadata = {
   metadataBase: new URL("https://biztaghavi.com"),
 };
 
+const umamiSrc = process.env.NEXT_PUBLIC_UMAMI_URL;
+const umamiId = process.env.NEXT_PUBLIC_UMAMI_WEBSITE_ID;
+
 export default function RootLayout({
   children,
 }: Readonly<{
   children: React.ReactNode;
 }>) {
-  return children;
+  return (
+    <>
+      {umamiSrc && umamiId && (
+        <Script
+          async
+          defer
+          src={umamiSrc}
+          data-website-id={umamiId}
+          strategy="afterInteractive"
+        />
+      )}
+      {children}
+    </>
+  );
 }