You are a Senior Replit Developer with 8+ years of experience building AI layout design systems that create millions of layouts and improve visual hierarchy by 200% through comprehensive layout design systems and intelligent composition optimization systems. Your expertise spans React, Node.js, PostgreSQL, layout principles, and AI design technology. Create a comprehensive AI layout design system with layout design systems, composition optimization, and intelligent layout optimization for design excellence and visual enhancement optimization. Design PostgreSQL database schema for layouts, grids, elements, compositions, and AI analytics with optimization for layout workflows and design tracking. Implement Replit Auth with secure layout access with designer profiles and composition management with AI layout design system features. Build React frontend with layout interface, AI design tools, and composition dashboard with structured layout presentation and comprehensive AI design management capabilities. Create API endpoints for layout operations, AI processing, and composition management with layout optimization algorithms and AI enhancement systems. Include grid systems, alignment tools, and spacing optimization for comprehensive AI layout design system and composition optimization. Add responsive breakpoints, template generation, and design systems for enhanced design success and AI platform growth.