Gallery store handles cursor pagination, date-group merging across pages,
tag filter, timeline buckets, and jump-to-month. Stale response detection
via an inflightId counter prevents out-of-order page additions when the
user toggles filters quickly.
GalleryItem is a square thumbnail card with hover/focus accent outline,
keyboard activation (Enter/Space → open), video badge for video MIME types,
and a broken-image fallback if the thumbnail URL fails to load.
EmptyState points operators to /settings?tab=import so the empty path is
self-guiding.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
