# Changelog

## [1.3.0] - Production Ready Release - 2026-04-06

### Added
- **Production Deployment Guide**: Comprehensive documentation for deploying to production
- **Error Handler Middleware**: Centralized error handling with panic recovery
- **Graceful Shutdown**: Proper cleanup of resources on server shutdown
- **Production Configuration**: Optimized settings for production environments
- **Health Check Endpoints**: `/health`, `/ready`, and `/live` for monitoring
- **Database Connection Pooling**: Configured for optimal performance
- **Rate Limiting**: Protection against abuse and DDoS
- **Audit Logging**: Complete tracking of all user actions
- **Security Headers**: HSTS, CSP, X-Frame-Options, etc.
- **Docker Production Compose**: Optimized docker-compose.prod.yml with resource limits
- **Automated Testing Script**: Pre-deployment validation script
- **Backup Scripts**: Automated database and file backups
- **Monitoring Setup**: Prometheus and Grafana integration ready

### Fixed
- **Debug Logging**: Removed all `fmt.Printf` debug statements from production code
- **Graceful Exit**: Changed `os.Exit(0)` to proper graceful shutdown in update handler
- **Error Handling**: Improved error responses across all handlers
- **Search Handler**: Removed verbose debug logging from Brave Search API calls
- **Semantic Search**: Replaced fmt.Printf with proper log.Printf calls
- **Web Scraping**: Added proper logging instead of fmt.Printf
- **Border Consistency**: Fixed dark mode border colors (#262626) across all components
- **Scrollbar Styling**: Consistent scrollbar appearance in light and dark modes
- **Input Validation**: Enhanced security with better input sanitization
- **CORS Configuration**: Proper CORS setup for production environments

### Improved
- **Database Migrations**: Auto-migration with fallback to legacy SQL migrations
- **Cache Strategy**: DragonflyDB integration with intelligent caching
- **Session Management**: Redis-backed sessions with automatic cleanup
- **Performance**: Optimized database queries and connection pooling
- **Security**: Enhanced JWT validation and encryption
- **Logging**: Structured logging with proper log levels
- **Documentation**: Comprehensive deployment and maintenance guides
- **Frontend Styling**: Consistent Papra design system implementation
- **Dark Mode**: Perfect #262626 border consistency
- **Light Mode**: Enhanced shadows and better contrast
- **Responsive Design**: Improved mobile and tablet layouts

### Security
- **Input Validation**: Comprehensive validation middleware
- **SQL Injection Protection**: Parameterized queries throughout
- **XSS Protection**: Proper output encoding
- **CSRF Protection**: Token-based CSRF prevention
- **Rate Limiting**: Per-endpoint rate limiting
- **Secure Cookies**: HTTPOnly and Secure flags
- **Password Hashing**: Bcrypt with proper cost factor
- **2FA Support**: TOTP-based two-factor authentication
- **API Key Management**: Secure API key generation and validation
- **Audit Trail**: Complete audit logging of security events

### Performance
- **Database Indexing**: Optimized indexes on frequently queried fields
- **Query Optimization**: Reduced N+1 queries
- **Caching Layer**: DragonflyDB for session and data caching
- **Connection Pooling**: Configured for high concurrency
- **Gzip Compression**: Enabled for API responses
- **Static Asset Caching**: Browser caching headers
- **Lazy Loading**: Frontend components load on demand
- **Code Splitting**: Optimized bundle sizes

### DevOps
- **Docker Multi-Stage Builds**: Smaller image sizes
- **Health Checks**: Kubernetes-ready health endpoints
- **Log Rotation**: Automatic log management
- **Resource Limits**: CPU and memory limits in Docker
- **Horizontal Scaling**: Load balancer ready
- **Zero-Downtime Deploys**: Rolling update support
- **Backup Automation**: Scheduled backups with retention
- **Monitoring**: Metrics and alerting ready

### Breaking Changes
- None - fully backward compatible

### Deprecated
- Legacy UUID-based schema (auto-migrates to new schema)
- In-memory sessions (replaced with Redis-backed sessions)

### Migration Notes
- Run `go mod tidy` in backend directory
- Update `.env` file with production values
- Generate new JWT_SECRET and ENCRYPTION_KEY
- Review and update CORS settings
- Configure SSL certificates for HTTPS
- Set up database backups
- Configure monitoring and alerting

### Known Issues
- Computer vision OCR is placeholder implementation (requires Tesseract integration)
- GeoIP detection returns "unknown" (requires GeoIP database)
- Email sending requires SMTP configuration
- Screenshot capture requires Chrome/Chromium installation

### Upgrade Instructions
1. Backup your database: `./backup-trackeep.sh`
2. Pull latest changes: `git pull origin main`
3. Update dependencies: `cd backend && go mod tidy && cd ../frontend && npm install`
4. Rebuild containers: `docker-compose -f docker-compose.prod.yml build`
5. Run migrations: `docker-compose -f docker-compose.prod.yml up -d`
6. Verify health: `curl http://localhost:8080/health`

### Contributors
- Enhanced by AI Assistant (Kiro)
- Original project by Dvorinka

### Support
- GitHub Issues: https://github.com/Dvorinka/Trackeep/issues
- Documentation: See PRODUCTION_DEPLOYMENT.md

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## [1.2.5] - Previous Release

### Features
- Full-stack learning and productivity platform
- User authentication with JWT
- Bookmark management with metadata
- Task tracking with priorities
- File upload and sharing
- Notes with encryption
- Chat with AI integration
- YouTube video bookmarks
- GitHub integration
- Time tracking
- Calendar events
- Analytics dashboard
- Learning paths
- And much more...