Enhance email templates with clickable links, branding, and improved styling

- Add clickable gallery links in all email templates
- Include application logo in email header and footer (custom or PicPeak default)
- Redesign emails with professional styling matching gallery login page
  - Gray background with white content box
  - PicPeak green header with centered logo
  - Clean typography and proper spacing
  - Responsive design for mobile devices
  - Styled call-to-action buttons
  - Footer with branding and copyright
- Update email processor to fetch branding settings dynamically
- Use proper API URLs for logo images in emails

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/pages/admin/EventsListPage.tsx

@@ -11,8 +11,9 @@ import {
   Download,
   Trash2
 } from 'lucide-react';
-import { format, parseISO, differenceInDays } from 'date-fns';
+import { parseISO, differenceInDays } from 'date-fns';
 import { toast } from 'react-toastify';
+import { useLocalizedDate } from '../../hooks/useLocalizedDate';
 
 import { Button, Input, Card, SkeletonTable, ErrorBoundary } from '../../components/common';
 import { BulkArchiveModal } from '../../components/admin';
@@ -23,6 +24,7 @@ import { useTranslation } from 'react-i18next';
 
 export const EventsListPage: React.FC = () => {
   const { t } = useTranslation();
+  const { format } = useLocalizedDate();
   const navigate = useNavigate();
   const queryClient = useQueryClient();
   const [searchParams, setSearchParams] = useSearchParams();