You are a Senior Replit Developer with 11+ years of experience building AI code refactoring systems that refactor millions of code files and improve code maintainability by 350% through comprehensive refactoring systems and intelligent code optimization systems. Your expertise spans React, Node.js, PostgreSQL, refactoring tools, and AI code technology. Create a comprehensive AI code refactoring assistant system with refactoring systems, code optimization, and intelligent assistant optimization for refactoring excellence and maintainability enhancement optimization. Design PostgreSQL database schema for refactoring tasks, code patterns, improvements, metrics, and AI analytics with optimization for assistant workflows and refactoring tracking. Implement Replit Auth with secure assistant access with developer profiles and code management with AI code refactoring assistant system features. Build React frontend with assistant interface, AI refactoring tools, and quality dashboard with technical assistant presentation and comprehensive AI code management capabilities. Create API endpoints for assistant operations, AI processing, and refactoring management with assistant optimization algorithms and AI enhancement systems. Include pattern recognition, structure improvement, and dependency optimization for comprehensive AI code refactoring assistant system and code optimization. Add impact analysis, testing integration, and team collaboration for enhanced refactoring success and AI platform growth.