- Added methods in VocabService to handle scheduled review states, including normalization of review dates and management of review stages.
- Enhanced lesson state management to support review scheduling, improving the learning process for users.
- Updated VocabCourseView and VocabLessonView to display review statuses and due dates, providing clearer feedback on lesson progress and review requirements.
- Introduced new UI elements to indicate review status, enhancing user engagement and understanding of lesson timelines.