fix: correct UM portal branding asset

web/components/Layout.tsx

@@ -1,4 +1,5 @@
 import Head from "next/head";
+import Image from "next/image";
 import Link from "next/link";
 import { useRouter } from "next/router";
 import { ReactNode } from "react";
@@ -53,9 +54,15 @@ export default function Layout({
       </a>
       <header className="ul-shell__header">
         <Link href="/" className="ul-shell__brand" aria-label="UlHub jobs home">
-          <span className="ul-shell__brand-mark" aria-hidden="true">
-            UL
-          </span>
+          <Image
+            className="ul-shell__brand-mark"
+            src="/um-trace-mark.png"
+            alt=""
+            width={40}
+            height={40}
+            priority
+            unoptimized
+          />
           <span>UlHub</span>
         </Link>
         {user && (