Adds three things to the /roadmap horizontal route:
- a scroll-proximity focus effect (centre milestone scales/brightens,
edges recede) so the track feels alive as you move it;
- eased, accumulating wheel/trackpad scrolling instead of instant jumps;
- a trailing tail past the last milestone (opt-in tailLength) so the line
keeps going and the final item can scroll toward the centre.
Also enlarges the milestone card text for readability.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jonathan Hvid
c9efe869ea