# Changelog

All notable changes to this project will be documented in this file.

## [1.0.0] - 2025-01-XX

### Added
- Initial release
- WhatsApp chatbot integration with Baileys
- Admin dashboard with metrics
- User management system
- FAQ automatic responses
- AI integration (DeepSeek/OpenAI)
- Mass messaging system
- Payment integration (PayPal, PagSeguro)
- Push notifications
- Multi-language support
- Security features (Rate limiting, CSRF, XSS protection, Helmet.js)
- MVC architecture with controllers
- Centralized error handling
- Input validation system

### Security
- Rate limiting for API endpoints
- CSRF protection
- XSS input sanitization
- Helmet.js security headers
- JWT authentication
- SQL injection protection (prepared statements)

### Architecture
- MVC structure with controllers
- BaseController for common functionality
- Centralized error handler
- Validation middleware
- Service layer separation

