# 🗺️ React + Node.js Full-Stack Development Roadmap

**Project Type**: Full-Stack Web Application
**Frontend**: React + TypeScript
**Backend**: Node.js + Express/Fastify
**Framework Version**: VERSATIL SDLC v6.4.0

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## 🤖 Recommended OPERA Agents

### Critical Agents (Primary Development)

- **James-Frontend** `.claude/agents/james-frontend.md`
  UI/UX development, component architecture, and accessibility

- **James-React** `.claude/agents/sub-agents/james-frontend/james-react.md`
  React-specific patterns, hooks, state management, and performance

- **Marcus-Backend** `.claude/agents/marcus-backend.md`
  API architecture, security (OWASP), database design

- **Marcus-Node** `.claude/agents/sub-agents/marcus-backend/marcus-node-backend.md`
  Node.js async patterns, Express/Fastify optimization, event loop tuning

- **Maria-QA** `.claude/agents/maria-qa.md`
  Quality assurance, test automation, code review

### Recommended Agents (Enhanced Workflow)

- **Alex-BA** `.claude/agents/alex-ba.md`
  Requirements analysis, user stories, acceptance criteria

- **Sarah-PM** `.claude/agents/sarah-pm.md`
  Project coordination, sprint management, documentation

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## 📅 4-Week Development Plan

### Week 1: Foundation & Architecture

**Description**: Establish project structure, tooling, and core architecture for both frontend and backend

**Primary Agents**: Alex-BA, Sarah-PM, Marcus-Node, James-React

**Tasks**:
- [ ] Requirements analysis with Alex-BA (user stories, acceptance criteria)
- [ ] Backend API design (RESTful endpoints, data models)
- [ ] Frontend component architecture (atomic design, component library)
- [ ] Set up monorepo structure (or separate repos)
- [ ] Configure TypeScript for both frontend and backend
- [ ] Set up ESLint, Prettier, Husky for code quality
- [ ] Initialize database (PostgreSQL/MongoDB) with migrations
- [ ] Configure environment variables (.env management)
- [ ] Set up Git workflow (branching strategy, PR templates)
- [ ] Configure CI/CD pipeline (GitHub Actions or GitLab CI)

**Quality Gates**:
- ✅ All developers can run full stack locally
- ✅ Linting and formatting enforced pre-commit
- ✅ CI pipeline passes on main branch
- ✅ API documentation scaffold created

**Estimated Effort**: 40-50 hours

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### Week 2: Core Feature Development

**Description**: Implement authentication, core API endpoints, and primary UI components

**Primary Agents**: Marcus-Node, James-React, Maria-QA

**Frontend Tasks**:
- [ ] Create reusable UI component library (Button, Input, Card, etc.)
- [ ] Implement authentication UI (Login, Signup, Password Reset)
- [ ] Set up React Router for navigation
- [ ] Configure state management (Redux Toolkit, Zustand, or Context)
- [ ] Integrate with backend API (Axios/Fetch wrapper)
- [ ] Implement form validation (React Hook Form + Zod)
- [ ] Add responsive design (mobile-first approach)
- [ ] Accessibility: keyboard navigation, ARIA labels, screen reader testing

**Backend Tasks**:
- [ ] Implement authentication (JWT or session-based)
- [ ] Create user registration and login endpoints
- [ ] Set up password hashing (bcrypt) and validation
- [ ] Implement role-based access control (RBAC)
- [ ] Create core CRUD API endpoints
- [ ] Add request validation middleware (Joi, Zod, or express-validator)
- [ ] Implement error handling and logging (Winston, Pino)
- [ ] Set up database connection pooling
- [ ] Add API rate limiting (express-rate-limit)

**Testing**:
- [ ] Unit tests for React components (Jest + React Testing Library)
- [ ] Unit tests for API endpoints (Jest + Supertest)
- [ ] Test coverage >= 80%

**Quality Gates**:
- ✅ Authentication flow working end-to-end
- ✅ All API endpoints validated and documented
- ✅ UI components accessible (axe-core passing)
- ✅ Unit tests passing with 80%+ coverage
- ✅ No critical security vulnerabilities (Snyk scan)

**Estimated Effort**: 60-80 hours

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### Week 3: Integration, Testing & Optimization

**Description**: Integrate frontend and backend, comprehensive testing, performance optimization

**Primary Agents**: Maria-QA, Marcus-Node, James-React

**Integration Tasks**:
- [ ] Full integration of frontend and backend
- [ ] End-to-end testing with Playwright or Cypress
- [ ] API integration testing with realistic data
- [ ] Error handling and user feedback (toast notifications, error boundaries)
- [ ] Loading states and optimistic UI updates
- [ ] Implement pagination, infinite scroll, or virtualization

**Performance Optimization**:
- [ ] Frontend: Code splitting, lazy loading, image optimization
- [ ] Frontend: React performance profiling (React DevTools)
- [ ] Backend: Database query optimization and indexing
- [ ] Backend: Caching layer (Redis or in-memory cache)
- [ ] Backend: API response compression (gzip)
- [ ] Load testing with k6 or Artillery (target < 200ms API response)

**Security Hardening**:
- [ ] OWASP Top 10 compliance check
- [ ] SQL injection prevention (parameterized queries)
- [ ] XSS protection (sanitize inputs, Content Security Policy)
- [ ] CSRF protection (tokens or SameSite cookies)
- [ ] Rate limiting and DDoS protection
- [ ] Security headers (Helmet.js)

**Accessibility & SEO**:
- [ ] Accessibility audit with axe-core (target WCAG 2.1 AA)
- [ ] Keyboard navigation testing
- [ ] Screen reader testing (NVDA, VoiceOver)
- [ ] Meta tags and Open Graph for SEO
- [ ] Sitemap and robots.txt

**Quality Gates**:
- ✅ All E2E tests passing
- ✅ Lighthouse score >= 90 (Performance, Accessibility, Best Practices)
- ✅ API response times < 200ms (95th percentile)
- ✅ Security scan passed (no high/critical vulnerabilities)
- ✅ Accessibility audit passed (WCAG 2.1 AA)

**Estimated Effort**: 60-80 hours

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### Week 4: Polish, Documentation & Deployment

**Description**: Final refinements, comprehensive documentation, production deployment

**Primary Agents**: Sarah-PM, Maria-QA, Marcus-Node, James-React

**Polish Tasks**:
- [ ] User acceptance testing (UAT) with stakeholders
- [ ] Bug triage and resolution
- [ ] UI polish (animations, transitions, micro-interactions)
- [ ] Error messages and user guidance improvements
- [ ] Performance profiling and final optimizations

**Documentation**:
- [ ] API documentation (OpenAPI/Swagger or Postman collections)
- [ ] Frontend component documentation (Storybook)
- [ ] User guides and onboarding flow
- [ ] Developer setup guide (README.md)
- [ ] Architecture diagrams (C4 model or similar)
- [ ] Deployment runbook

**Deployment Preparation**:
- [ ] Environment configuration (staging, production)
- [ ] Database migration scripts tested
- [ ] CI/CD pipeline for automated deployments
- [ ] Rollback procedure documented and tested
- [ ] Monitoring and alerting (Sentry, New Relic, or Datadog)
- [ ] Log aggregation (ELK stack or Splunk)
- [ ] Health check endpoints (/health, /readiness)
- [ ] Backup and disaster recovery procedures

**Production Deployment**:
- [ ] Deploy backend to production (AWS, GCP, Azure, or Heroku)
- [ ] Deploy frontend to CDN (Vercel, Netlify, or CloudFront)
- [ ] Configure custom domain and SSL certificates
- [ ] Set up database backups (automated daily backups)
- [ ] Enable monitoring dashboards
- [ ] Post-deployment smoke testing
- [ ] User communication and release notes

**Quality Gates**:
- ✅ All production checklist items completed
- ✅ UAT sign-off received
- ✅ Documentation reviewed and approved
- ✅ Monitoring dashboards operational
- ✅ Rollback procedure tested
- ✅ Zero critical/high severity issues

**Estimated Effort**: 50-60 hours

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## 🎯 Quality Strategy

### Testing Approach
- **Unit Tests**: Jest + React Testing Library (frontend), Jest + Supertest (backend)
- **Integration Tests**: API integration tests with realistic data
- **E2E Tests**: Playwright or Cypress for critical user flows
- **Visual Regression**: Percy or Chromatic for UI change detection
- **Load Testing**: k6 or Artillery (target < 200ms API response, < 3s page load)

### Code Quality
- **Linting**: ESLint with Airbnb or Standard config
- **Formatting**: Prettier with pre-commit hooks
- **Type Safety**: TypeScript strict mode enabled
- **Code Review**: Maria-QA reviews all PRs
- **Test Coverage**: Minimum 80% for new code

### Performance Standards
- **Frontend**: Lighthouse score >= 90
- **Backend**: API response times < 200ms (95th percentile)
- **Database**: Query execution < 50ms
- **First Contentful Paint**: < 1.5s
- **Time to Interactive**: < 3.5s

### Security Standards
- **OWASP Top 10**: Full compliance
- **Dependency Scanning**: Snyk or npm audit (no high/critical vulns)
- **Authentication**: Secure token handling, password hashing
- **Authorization**: Role-based access control
- **Input Validation**: All user inputs validated and sanitized

### Accessibility Standards
- **WCAG 2.1 AA Compliance**: Target 100%
- **Keyboard Navigation**: All interactive elements accessible via keyboard
- **Screen Reader Support**: Proper ARIA labels and semantic HTML
- **Color Contrast**: Minimum 4.5:1 for normal text

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## 🚀 Deployment Checklist

### Pre-Deployment
- ✅ All tests passing (unit, integration, E2E)
- ✅ Code coverage >= 80%
- ✅ No critical/high security vulnerabilities
- ✅ Performance benchmarks met
- ✅ Lighthouse score >= 90
- ✅ Accessibility audit passed (WCAG 2.1 AA)
- ✅ API documentation up to date
- ✅ User documentation complete

### Infrastructure
- ✅ Environment variables configured (staging, production)
- ✅ Database migrations tested
- ✅ SSL certificates configured
- ✅ CDN configured (for static assets)
- ✅ Load balancer configured (if applicable)
- ✅ Auto-scaling configured

### Monitoring & Operations
- ✅ Error tracking enabled (Sentry, Rollbar)
- ✅ Application monitoring (New Relic, Datadog)
- ✅ Log aggregation configured
- ✅ Uptime monitoring (Pingdom, UptimeRobot)
- ✅ Alerting rules configured
- ✅ Backup automation enabled
- ✅ Rollback procedure documented and tested

### Post-Deployment
- ✅ Smoke tests passing in production
- ✅ Monitoring dashboards reviewed
- ✅ Performance metrics baseline recorded
- ✅ User communication sent (release notes)
- ✅ Incident response plan in place

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## 💡 Technology Stack Recommendations

### Frontend
- **Framework**: React 18+ with TypeScript
- **Build Tool**: Vite or Next.js
- **State Management**: Redux Toolkit, Zustand, or Jotai
- **Routing**: React Router v6
- **Forms**: React Hook Form + Zod validation
- **Styling**: Tailwind CSS or CSS Modules
- **Testing**: Jest, React Testing Library, Playwright
- **Component Library**: Shadcn/ui, Radix UI, or custom

### Backend
- **Runtime**: Node.js 20+ LTS
- **Framework**: Express or Fastify
- **Database**: PostgreSQL (recommended) or MongoDB
- **ORM**: Prisma (PostgreSQL) or Mongoose (MongoDB)
- **Authentication**: Passport.js or custom JWT
- **Validation**: Zod or Joi
- **Testing**: Jest, Supertest
- **Logging**: Winston or Pino

### DevOps
- **Version Control**: Git + GitHub/GitLab
- **CI/CD**: GitHub Actions or GitLab CI
- **Hosting**: Vercel (frontend), Railway/Render (backend)
- **Database Hosting**: Supabase, PlanetScale, or Railway
- **Monitoring**: Sentry + Vercel Analytics
- **CDN**: Vercel Edge Network or CloudFront

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## 📊 Success Metrics

### Development Velocity
- Sprint velocity: Track story points completed per sprint
- Bug resolution time: < 48 hours for critical, < 1 week for high
- Code review turnaround: < 24 hours

### Quality Metrics
- Test coverage: >= 80%
- Code review approval rate: >= 95%
- Defect escape rate: < 5% (bugs found in production)
- Security vulnerability count: 0 high/critical

### Performance Metrics
- API response time: < 200ms (95th percentile)
- Page load time: < 3 seconds
- Uptime: >= 99.9%
- Error rate: < 0.1%

### User Satisfaction
- User satisfaction score: >= 4.5/5
- Task completion rate: >= 90%
- User retention: Track weekly active users

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## 🔗 Related Resources

- **VERSATIL Framework Documentation**: `.claude/AGENTS.md`, `.claude/rules/README.md`
- **Agent Slash Commands**: `.claude/commands/`
- **React Best Practices**: [React.dev](https://react.dev)
- **Node.js Best Practices**: [GitHub - Node.js Best Practices](https://github.com/goldbergyoni/nodebestpractices)
- **OWASP Top 10**: [OWASP.org](https://owasp.org/www-project-top-ten/)
- **WCAG 2.1 Guidelines**: [W3C WCAG](https://www.w3.org/WAI/WCAG21/quickref/)

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**🤖 Generated by VERSATIL SDLC Framework v6.4.0**
**Last Updated**: ${new Date().toISOString()}
