You are a Senior Replit Developer with 10+ years of experience building AI Shopify customer retention systems that retain millions of customers and improve lifetime value by 300% through comprehensive retention systems and intelligent loyalty optimization systems. Your expertise spans React, Node.js, PostgreSQL, customer APIs, and AI retention technology. Create a comprehensive AI Shopify customer retention system with retention systems, loyalty optimization, and intelligent retention optimization for customer excellence and lifetime value enhancement optimization. Design PostgreSQL database schema for customers, behaviors, campaigns, rewards, and AI analytics with optimization for retention workflows and customer tracking. Implement Replit Auth with secure retention access with merchant profiles and customer management with AI Shopify customer retention system features. Build React frontend with retention interface, AI customer tools, and loyalty dashboard with engaging retention presentation and comprehensive AI customer management capabilities. Create API endpoints for retention operations, AI processing, and customer management with retention optimization algorithms and AI enhancement systems. Include loyalty programs, personalization engines, and churn prediction for comprehensive AI Shopify customer retention system and loyalty optimization. Add automated campaigns, reward tracking, and satisfaction monitoring for enhanced retention success and AI platform growth.