- Matches Figma design (file uHDZkVHjAp7BXDKQKB0PM4, node 4367-11405).
- Mobile keeps the existing 5-post single column unchanged.
- Desktop (md+) renders all 12 latest posts in a CSS-columns masonry
with break-inside-avoid so each card's height stays content-driven.
- Adds an optional 'fluid' prop to MessageBubble that drops the
standalone-feed max-widths so bubbles fill the masonry column. The
/browse stream keeps the default non-fluid widths.
Match Figma node 4366-11092 desktop banner design:
- Slides shrink to 78%/72%/60% width on md/lg/xl with snap-center,
first/last get matching left/right margin so the edges still center.
- Each slide is wrapped in a framer-motion m.div that animates filter,
opacity, and scale between active and idle states.
- goTo and scroll/drag handlers use the slide's real offsetWidth so
centering math holds at every breakpoint; mobile (full-width, snap-start
visual) is unchanged.
