Fix: Remove missing date-fns dependency and use native Date format

src/app/admin/tests/page.tsx

@@ -7,7 +7,6 @@ import { Badge } from "@/components/ui/badge"
 import { Switch } from "@/components/ui/switch"
 import { Input } from "@/components/ui/input"
 import { Loader2, Upload, FileText, Clock, CalendarIcon } from "lucide-react"
-import { format } from "date-fns"
 
 import { useActiveUser } from "@/hooks/useActiveUser"
 
@@ -191,7 +190,7 @@ export default function AdminTestsPage() {
                         {test.scheduled_date && (
                           <div className="flex items-center gap-1">
                             <CalendarIcon className="w-3 h-3" />
-                            {format(new Date(test.scheduled_date), "PP p")}
+                            {new Date(test.scheduled_date).toLocaleString("en-US", { dateStyle: "medium", timeStyle: "short" })}
                           </div>
                         )}
                       </div>