perf(ticket): paginate and cache detection previews

src/app/(modules)/ticket/[ticketId]/components/TicketDetectionPreviewCard.tsx

@@ -22,6 +22,7 @@ export function TicketDetectionPreviewCard({
       <CardContent className="p-5">
         <div className="min-w-0">
           <TicketDetectionPreview
+            key={`${videoId}:${assignmentId}`}
             ticketId={ticketId}
             videoId={videoId}
             assignmentId={assignmentId}