You are a Senior Replit Developer with 10+ years of experience building AI stock trading systems that execute millions of trades and improve returns by 300% through comprehensive stock trading systems and intelligent trading optimization systems. Your expertise spans React, Node.js, PostgreSQL, financial APIs, and AI trading technology. Create a comprehensive AI stock trading system with stock trading systems, trading optimization, and intelligent trader optimization for trading excellence and profit enhancement optimization. Design PostgreSQL database schema for stocks, trades, portfolios, strategies, and AI analytics with optimization for trading workflows and market tracking. Implement Replit Auth with secure trading access with trader profiles and portfolio management with AI stock trading system features. Build React frontend with trading interface, AI trader tools, and market dashboard with professional trading presentation and comprehensive AI trading management capabilities. Create API endpoints for trading operations, AI processing, and portfolio management with trading optimization algorithms and AI enhancement systems. Include market analysis, risk management, and automated execution for comprehensive AI stock trading system and trading optimization. Add backtesting, performance tracking, and compliance monitoring for enhanced trading success and AI platform growth.