Backend optimizations

# MinionAH Backend Optimizations Fork ## 🚀 Overview This fork contains comprehensive backend optimizations for the MinionAH project, focusing on security, performance, and code quality improvements. ## 🔧 What's Been Improved ### Security Enhancements - **SQL Injection Prevention**: Added input validation and sanitization for all database operations - **Enhanced Authentication**: Increased session token entropy (32 bytes) and improved session management - **Input Validation**: Comprehensive validation for all API endpoints and user inputs - **Rate Limiting**: Implemented basic rate limiting to prevent API abuse ### Performance Optimizations - **Database Indexes**: Added performance indexes for `timeCreated` and `createdAt` fields - **API Caching**: 5-minute cache for external API calls to reduce redundant requests - **Batch Operations**: Enhanced database utilities for better throughput - **Error Handling**: Improved error handling to prevent cascading failures ### Code Quality Improvements - **Centralized Utilities**: Created `api-utils.ts` for standardized error handling and responses - **Better Documentation**: Added JSDoc comments and comprehensive documentation - **Type Safety**: Enhanced TypeScript types and null safety - **Modular Design**: Separated concerns into reusable utility functions ## 📁 Key Files Modified 1. **`prisma/schema.prisma`** - Added performance indexes 2. **`src/lib/server/api-utils.ts`** - New centralized API utilities 3. **`src/lib/server/lucia/auth.ts`** - Enhanced authentication system 4. **`src/routes/api/craftcost/[[internalName]]/+server.ts`** - Refactored with caching and rate limiting 5. **`src/lib/server/utilities.ts`** - Enhanced database utilities with security features 6. **`BACKEND_OPTIMIZATIONS_SUMMARY.md`** - Comprehensive documentation ## 🎯 Impact - **Security**: High - SQL injection prevention, session security, input validation - **Performance**: High - Database indexes, caching, batch operations - **Maintainability**: High - Centralized utilities, error handling, documentation ## 📝 Commit History 1. Database performance indexes 2. Centralized API utilities for error handling 3. Refactored craftcost API with caching and rate limiting 4. Enhanced authentication system with improved security 5. Enhanced database utilities with security and performance features 6. Comprehensive documentation and summary ## 🔄 Next Steps This fork is ready for: - Code review - Testing in development environment - Creating a pull request to the main repository - Database migration for the new indexes All improvements follow industry best practices and modern development patterns.