- product: show seller (logo + name) in the desktop info column (was missing
after hiding the mobile header); action icons (save/share/collection/AI) are
now circular bordered buttons on desktop instead of a bare icon row
- collection detail: cover constrained to a 360px portrait column with
object-cover (fixes over-long image + side margins); tighter spacing
- masonry: only render the loading skeleton while actively fetching (removes
the persistent grey block before the footer); sentinel moved above it
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
