- Added constants for session management in `auth.ts`.
- Created an authentication guard middleware in `02.auth-guard.ts` to protect API routes.
- Introduced caching mechanism in `00.cache.ts` and `01.context.ts` for improved performance.
- Developed user authentication context in `context.ts` to manage user sessions.
- Implemented cookie handling functions in `cookie.ts` for session management.
- Added error handling for authentication in `errors.ts`.
- Enhanced user authentication logic in `index.ts` with session creation and validation.
- Created captcha service for user registration and login in `captcha` directory.
- Established configuration management with error handling in `config` directory.
- Added utility functions for admin role verification and API route allowlisting.
- Implemented rate limiting to prevent abuse of API endpoints.