Successful downloads no longer pop a 'downloadOk' toast across all
the download sites (PopularRankList, RecommendedCard, FileDocBubble,
ImageLightbox). The browser's native download UI already confirms
the action, and the toast was redundant noise. Failure toasts and
the spinner state remain so users still see errors.
Wrap the card in a stretched link overlay so clicking anywhere (not
just the title) navigates to /resource/:id and scrolls to the matching
bubble. Keep the download button above the overlay so it stays
clickable.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Recommended cards already routed to /browse#post-<id>, but the stream had
no logic to scroll to the target bubble — and the post might not be paged
in yet. MessageStream now resolves the #post-<id> hash, auto-loads more
pages until the bubble renders, scrolls to it, and gives it a brief gold
highlight. Bubbles get scroll-mt so they clear the sticky header.
Also adds a global floating back-to-top button (BackToTop) mounted in
PublicLayout, shown after scrolling past 400px.
Bundles related staging UI work already present in the working tree.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
