- Category filter is now a multi-select dropdown with checkboxes
- PlaceAvatar: replace 200ms polling intervals with event-based
notification + React.memo for major performance improvement
- Map photo fetches: concurrency limited to 3 + lazy loading on images
- PlacesSidebar: content-visibility + useMemo for smooth scrolling
- Accommodation labels: check-out now appears before check-in on same day
- Timed places auto-sort chronologically when time is added
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