- Implemented a new `favorites` table in the database schema to store user favorites.
- Added API endpoint to toggle favorite status for cards.
- Enhanced card listing to include favorited status for the current user.
- Created service functions to manage favorites, including toggling and listing favorites.
- Updated migrations to include the new `favorites` table and its associated indexes.
- Added endpoints for creating, updating, retrieving, and deleting cards.
- Implemented validation for card creation and updates using Zod.
- Introduced caching mechanisms for card and category retrieval.
- Created endpoints for managing categories with validation and caching.
- Developed tag management endpoints with validation and caching.
- Added tools management endpoints for CRUD operations.
- Enhanced error handling for unique constraint violations in the error logger.
- Implemented utility functions for validation and error formatting.