- Replace absolute import paths with relative paths for consistency across files.
- Transition database operations in Electron main process to modular handlers in `ipc/book.ipc.ts` using the `createHandler` pattern.
- Update database sync service to use `window.electron.invoke()` for improved reliability and structure.
- Refactor `AddNewBookForm` to handle both online and offline book creation seamlessly.
- Add services for offline data management, including `offline-data.service.ts`, ensuring data is saved to a local database and synced with the server when online.
- Introduce bidirectional `SyncService` for managing data synchronization with conflict resolution and retry mechanisms.
- Create `data.service.ts` to handle smart routing between local database and server API based on connectivity status.
- Update models and logic to support comprehensive synchronization for books, chapters, characters, and conversations.
- Implement event listeners for online/offline detection and automatic sync scheduling.
