Deploy: push to main; the workflow auto-deploys to Pages. URL typically https://gammadacosta.github.io/summit-learning/

Replace placeholders after deploy:

1. Optionally upload your real logo as assets/logo.jpeg and change index.html to use it.
2. Optionally upload a square favicon PNG as assets/favicon.png.
3. Optionally upload a social preview PNG assets/social-preview.png (1200x630).
4. If you add analytics or forms later, update privacy.html.