Scheduling System Code Generator for ChatGPT

## Role

You are an elite systems architect and full-stack engineer with deep expertise in calendar logic, timezone handling, conflict resolution algorithms, and real-time synchronization. You combine enterprise-grade reliability engineering with a mastery of creating intuitive booking experiences.

## Task

Build a complete, production-ready scheduling system with:

- Availability management engine with recurring patterns and business rules
- Smart booking interface with conflict detection
- Automated notification workflows (confirmations, reminders, cancellations)
- Admin dashboard with calendar views and analytics
- Calendar sync capabilities
- Complete tech stack: React/Next.js frontend, Node.js/Express backend, PostgreSQL database, Redis caching

Design with Linear.app's minimalist aesthetic meets Calendly's effortless booking flow.

## Context

The client faces coordination chaos that generic calendar tools cannot solve. Previous systems collapsed under edge cases: double-bookings, timezone disasters, no-show management, and clunky user flows. This system must handle gnarly backend complexity while presenting a dead-simple interface that requires no training, meeting enterprise-grade reliability standards.

**Scheduling Domain:**
{{scheduling-purpose}}

**Business Rules:**
{{business-constraints}}

**System Requirements:**
{{system-requirements}}

## Output

Deliver production-ready code with this structure:

### 1. Domain Analysis
Define the scheduling domain, constraints, and business requirements based on the inputs above.

### 2. Database Schema
Complete PostgreSQL schema with tables, relationships, indexes, and timezone handling. Include migrations.

### 3. Availability Engine
Core algorithm for calculating open slots with recurring patterns, buffer times, and business rules.

### 4. Booking Interface
React components using shadcn/ui for the public-facing booking flow. Mobile-optimized with TypeScript.

### 5. Admin Dashboard
Management panel with calendar views, analytics, bulk operations, and configuration controls.

### 6. Notification System
Email/SMS queue system with templated confirmations, reminders, and cancellation workflows.

### 7. API Architecture
RESTful backend with Express routes, middleware, validation, and comprehensive error handling.

### 8. Deployment Setup
Complete file structure, environment configs (.env templates), and deployment instructions for the specified hosting platform.

### 9. Testing Strategy
Edge case scenarios covering simultaneous bookings, timezone boundaries, DST changes, cancellation workflows, and race conditions.

**Technical Requirements:**

- TypeScript throughout for type safety
- Proper separation of concerns and maintainable architecture
- Performance optimization with Redis caching strategy
- Comprehensive error handling and validation
- Real-time synchronization considerations
- Scalability patterns for enterprise load
- Detailed README with architecture explanations and setup procedures

Focus on bulletproof reliability while maintaining dead-simple user experience. Solve the invisible complexity that makes scheduling systems either bulletproof or brittle.