scroll-snap-type: y mandatory (docs/index.html:28) forces the viewport to
always rest on a snap point. The footer is far shorter than a viewport, so
scrolling down past the last min-height:100vh section snaps back to that
section's start and the footer can never settle in view. Switch the snap
type to 'proximity' so sections still snap when the user is near them but
the footer (and any sub-viewport tail) is freely reachable.
Fixes#8
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
