Show pre-sale close time as a duration before the event starts.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/app/admin/events/_components/EventFormModal.tsx

@@ -10,7 +10,7 @@ import DurationInput from '@/components/admin/DurationInput';
 import { StarIcon, TrashIcon, XMarkIcon } from '@heroicons/react/24/outline';
 import toast from 'react-hot-toast';
 import { useLanguage } from '@/context/LanguageContext';
-import { parseDate, EVENT_TIMEZONE, minutesToDuration } from '@/lib/utils';
+import { parseDate, EVENT_TIMEZONE, formatDurationWords } from '@/lib/utils';
 
 interface EventFormData {
   title: string;
@@ -43,12 +43,6 @@ interface PresaleDefaults {
 
 const FALLBACK_PRESALE_DEFAULTS: PresaleDefaults = { enabled: true, minutesBefore: 120 };
 
-function describeDuration(minutes: number): string {
-  const { value, unit } = minutesToDuration(minutes);
-  const label = value === 1 ? unit.slice(0, -1) : unit;
-  return `${value} ${label}`;
-}
-
 const EMPTY_FORM: EventFormData = {
   title: '', titleEs: '', slug: '', description: '', descriptionEs: '',
   shortDescription: '', shortDescriptionEs: '',
@@ -425,7 +419,7 @@ export default function EventFormModal({
             )}
             <p className="text-xs text-gray-500">
               Site default: {presaleDefaults.enabled
-                ? `closes ${describeDuration(presaleDefaults.minutesBefore)} before the start`
+                ? `closes ${formatDurationWords(presaleDefaults.minutesBefore)} before the start`
                 : 'off'}
               {' '}(Admin › Settings › General).
             </p>