Booking flow: required terms and privacy checkbox with i18n

Also includes admin, dashboard, and API updates; PWA icon assets; and
assorted layout and utility changes on dev.

frontend/src/app/admin/settings/page.tsx

@@ -4,6 +4,7 @@ import { useState, useEffect } from 'react';
 import Link from 'next/link';
 import { useLanguage } from '@/context/LanguageContext';
 import { siteSettingsApi, eventsApi, legalSettingsApi, SiteSettings, TimezoneOption, Event, LegalSettingsData } from '@/lib/api';
+import { parseDate } from '@/lib/utils';
 import Card from '@/components/ui/Card';
 import Button from '@/components/ui/Button';
 import Input from '@/components/ui/Input';
@@ -319,7 +320,7 @@ export default function AdminSettingsPage() {
                       <div>
                         <p className="font-medium text-amber-900">{featuredEvent.title}</p>
                         <p className="text-sm text-amber-700">
-                          {new Date(featuredEvent.startDatetime).toLocaleDateString(locale === 'es' ? 'es-ES' : 'en-US', {
+                          {parseDate(featuredEvent.startDatetime).toLocaleDateString(locale === 'es' ? 'es-ES' : 'en-US', {
                             month: 'long',
                             day: 'numeric',
                             year: 'numeric',