This Book Management System is a Flask-based web application designed following the principles of Clean Architecture. It offers a simple API to manage books in a library, including adding new books and retrieving them by their ID.

The project is structured as follows to maintain separation of concerns:

• domain/: Contains business entities (entities.py) and use cases (use_cases.py).
• repository/: Contains the repository interface (book_repository.py) and its SQLite implementation (book_sql_repository.py).
• database/: Manages database connections and schema initialization.
• web/: Flask application setup (app.py) and routes (views.py).

• Add books to the library.
• Retrieve books by ID.

• Python 3
• Flask
• SQLite