fix: resolve JSX syntax error in sessions page

frontend/src/app/sessions/page.tsx

@@ -44,6 +44,7 @@ export default function SessionsListPage() {
   if (error) return <div className="p-8 text-[var(--color-danger)] text-center font-semibold">Error: {error}</div>;
 
   return (
+    <div className="max-w-7xl mx-auto px-6 py-10">
       <div className="flex items-center justify-between mb-8">
         <div>
           <h1 className="text-3xl font-bold tracking-tight mb-2 text-[var(--color-brand-light)]">Candidate Pools</h1>
@@ -101,5 +102,6 @@ export default function SessionsListPage() {
         </div>
       )}
     </div>
+    </div>
   );
 }