- Add email-validator package to requirements.txt
- Update User and Todo schemas to use new Pydantic v2 model_config syntax
- Replace deprecated 'orm_mode' with Pydantic v2 'from_attributes' config
- Create User model and schema
- Implement password hashing with bcrypt
- Add JWT token-based authentication
- Create user and auth endpoints
- Update todo endpoints with user authentication
- Add alembic migration for user model
- Update README with new features