Added 4 Demo Users, with Coast emails, Hierarchy, roles etc.

src/app/(dashboard)/profile/page.tsx

@@ -11,6 +11,7 @@ import { toast } from "sonner"
 
 export default function ProfilePage() {
   const { user, updateAvatar } = useUser()
+  if (!user) return null
   const fileInputRef = useRef<HTMLInputElement>(null)
 
   const handleAvatarChange = (e: React.ChangeEvent<HTMLInputElement>) => {