Fixed critical issues with Generate Certificates page:
- Replaced tribe_tickets_get_attendees() with direct database queries
- Added support for both TEC and TPP attendee post types
- Fixed attendee meta keys to show real names and emails
- Added proper CSS styling and navigation buttons
- Updated test utilities with correct staging URL
Generate Certificates page now fully functional:
- Shows 16 events in dropdown
- Displays 5 attendees with proper data
- Successfully generates certificates with confirmation message
- Includes Dashboard and Certificate Reports navigation
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
