- Remove unused state variables (readsMap, linksMap) by using only setters
- Move VALID_FILTERS constant outside component to fix exhaustive-deps warning
- Remove unused isReading variable in ReadingProgressIndicator
- Remove unused extractUrlFromBookmark function and IndividualBookmark import
- Fix type errors in linksFromBookmarks by extracting metadata from tags instead of non-existent properties
- Add deriveReadsFromBookmarks helper to convert 30023 bookmarks to ReadItems
- Add deriveLinksFromBookmarks helper for web bookmarks (39701) and URLs
- Update loadReadsTab to show bookmarked articles immediately, enrich in background
- Update loadLinksTab to show bookmarked links immediately, enrich in background
- Background enrichment merges reading progress only for displayed items
- Preserve existing pull-to-refresh and empty state logic