- Fix AnnotationSystem component types (string IDs, user objects, liked/likes properties)
- Add formatNumber and formatRating utilities for author components
- Update FilterSidebar to use correct tag ID types (string vs number)
- Fix EnhancedReadingView translation and work ID type mismatches
- Resolve Playwright dependency issues in testing setup
- Update Jest configuration for ES module compatibility
- Fix import paths and type conflicts across components
All unit tests now pass and major TypeScript compilation errors resolved.