- Added comprehensive SEO meta tags to `frontend/index.html` including Open Graph and Twitter Card data.
- Updated `frontend/public` with new favicon assets and a PWA manifest.
- Created a favicon generation script to automate favicon creation from SVG.
- Implemented `robots.txt` to allow all crawlers and point to the sitemap.
- Added `sitemap.xml` with public routes and priorities for better indexing.
David Montero Crespo