feat: Add PENDING_DELETE filter to all paginated queries and implement accordion-style drawer navigation
- Add sync_status != 'PENDING_DELETE' condition to all PagingSource queries in LinkDao (getAllLinksPaged, searchLinks, searchLinksFullText, getLinksByTag, getLinksByMultipleTags, getLinksInCollectionPaged, getDeadLinks, getPinnedLinksPaged)
- Update LinkRepositoryImpl to exclude PENDING_DELETE items in dynamic query builder and multi-tag filtering
- Replace independent drawer accordion states