fix: view-switcher on post — active colour removed, buttons still clickable
Previous attempt greyed out the entire bar + set pointer-events:none (not
clickable). Robin wants the active (coloured) highlight gone but the buttons
still clickable. The active state sits in style.css on body[data-feed-view]/
[data-grid-cols] (background:var(--ink)) — we now override that more specifically
via body.on-post to the neutral look. No more pointer-events:none: clicking
navigates (as intended) to the feed in that view.
Co-Authored-By: Claude <noreply@…>