Display past event photos in an auto-playing carousel between the
"What is Spanglish?" and "Stay Updated" sections. Images are loaded
dynamically from /images/carrousel/ folder with support for jpg, png,
and webp formats.
- Replace text logo with logo-spanglish.png in Header and Footer
- Update email templates to use logo image instead of styled text
- Add new HeroSection and EventHighlight components
- Update homepage layout and event detail pages
- Adjust Tailwind config and global styles
