Fix: Handle undefined rating_snapshot in job detail page

web/app/jobs/[id]/page.tsx

@@ -555,7 +555,7 @@ export default function JobDetailPage() {
               <div className="text-xs font-medium text-green-600">Duration</div>
             </div>
           )}
-          {job.rating_snapshot !== null && (
+          {job.rating_snapshot != null && (
             <div className="p-4 bg-yellow-50 border border-yellow-200 rounded-lg">
               <div className="text-2xl font-bold text-yellow-800 flex items-center gap-1">
                 {job.rating_snapshot.toFixed(1)}