feat: Comprehensive Project Infrastructure and Template System Implementation

[CodeGuideDev]

Summary

This PR implements the foundational infrastructure and template system for the CodeGuide application, providing a comprehensive backend architecture for template-based project outline generation with collaboration features.

🚀 Major Features Implemented

Infrastructure & DevOps

• Docker Development Environment: Complete setup with PostgreSQL, Redis, MinIO, and MailHog
• Environment Configuration: Comprehensive .env.example with development/production variants
• Testing Framework: Jest setup with mocks for external services
• Code Quality: ESLint, Prettier, and TypeScript configuration

Authentication & Security

• Enhanced Clerk + Supabase Integration: JWT-based authentication with OAuth support
• Rate Limiting: Redis-based rate limiting for API endpoints
• Row-Level Security: Comprehensive RLS policies for data access control
• Logging System: Structured logging with Winston for security events

Data Layer

• Database Schema: Complete PostgreSQL schema for templates, projects, versions, and collaboration
• Caching Layer: Redis integration for performance optimization
• File Storage: Abstraction layer supporting MinIO (dev) and AWS S3 (prod)
• Email Service: Template-based email system with Nodemailer

Template System

• Template Management: CRUD operations with validation and categorization
• Project System: Full project lifecycle with version history
• Collaboration: Real-time collaboration framework with comments and sharing
• API Layer: RESTful endpoints with comprehensive validation

Type Safety

• Complete TypeScript Types: Full type definitions for all entities
• Zod Validation: Runtime validation for API requests
• Database Types: Strongly typed database interfaces

🏗️ Architecture Highlights

• Service Layer Pattern: Clean separation of concerns with dedicated service classes
• Caching Strategy: Redis-based caching with TTL management
• Error Handling: Comprehensive error logging and user-friendly responses
• Scalability: Designed for horizontal scaling with stateless services
• Security First: JWT tokens, RLS policies, and secure defaults

📊 Database Schema

The implementation includes a robust database schema supporting:

• Templates: Customizable project templates with categorization
• Projects: User projects with content and metadata
• Versions: Automatic versioning with change tracking
• Collaboration: Multi-user access with role-based permissions
• Comments: Threaded commenting system for collaboration

🔧 Development Experience

• One-command Setup: npm run setup starts entire development environment
• Hot Reload: Full development workflow with live reloading
• Type Safety: Comprehensive TypeScript coverage
• Testing Ready: Jest framework with comprehensive mocks

🚦 What's Next

This PR provides the complete backend infrastructure. The next phases will include:

1. NLP Integration: OpenAI/Anthropic API integration for outline generation
2. Real-time Collaboration: WebSocket implementation for live editing
3. Export System: Multi-format export (PDF, DOCX, Markdown)
4. Frontend Implementation: React components and user interface

📋 Testing Strategy

• Database schema validation and migrations
• Template CRUD operations with validation
• Project lifecycle and collaboration workflows
• Authentication and authorization flows
• Rate limiting and caching functionality

🤖 Generated with Claude Code