# 🗺️ Vue + Python Backend Development Roadmap

**Project Type**: Full-Stack Web Application
**Frontend**: Vue 3 + TypeScript (Composition API)
**Backend**: Python + FastAPI/Django
**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-Vue** `.claude/agents/sub-agents/james-frontend/james-vue.md`
  Vue 3 Composition API, reactivity system, Pinia state management

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

- **Marcus-Python** `.claude/agents/sub-agents/marcus-backend/marcus-python-backend.md`
  Python async/await, FastAPI/Django patterns, PEP compliance

- **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 Vue + Python stack

**Primary Agents**: Alex-BA, Sarah-PM, Marcus-Python, James-Vue

**Tasks**:
- [ ] Requirements analysis with Alex-BA (user stories, acceptance criteria)
- [ ] Backend API design (RESTful or GraphQL endpoints)
- [ ] Frontend component architecture (Vue 3 Composition API structure)
- [ ] Set up project structure (monorepo or separate repos)
- [ ] Configure TypeScript for Vue with Volar
- [ ] Set up Python virtual environment (venv or poetry)
- [ ] Configure linting (ESLint for Vue, Ruff/Black for Python)
- [ ] Initialize database (PostgreSQL with SQLAlchemy or Django ORM)
- [ ] Set up environment variables (.env management)
- [ ] Configure Git workflow (branching strategy, PR templates)
- [ ] Set up 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 (OpenAPI/Swagger)

**Estimated Effort**: 40-50 hours

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### Week 2: Core Feature Development

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

**Primary Agents**: Marcus-Python, James-Vue, Maria-QA

**Frontend Tasks (Vue 3)**:
- [ ] Create reusable Vue component library (Button, Input, Card, etc.)
- [ ] Implement authentication UI (Login, Signup, Password Reset)
- [ ] Set up Vue Router for navigation (with route guards)
- [ ] Configure Pinia for state management
- [ ] Integrate with backend API (Axios wrapper with interceptors)
- [ ] Implement form validation (VeeValidate or custom composables)
- [ ] Add responsive design with Tailwind CSS or Vue-specific framework
- [ ] Accessibility: ARIA labels, keyboard navigation, screen reader support

**Backend Tasks (Python)**:
- [ ] Implement authentication (JWT with HTTPOnly cookies)
- [ ] Create user registration and login endpoints
- [ ] Set up password hashing (Passlib with bcrypt)
- [ ] Implement role-based access control (RBAC)
- [ ] Create core CRUD API endpoints
- [ ] Add request validation (Pydantic models)
- [ ] Implement error handling and logging (Python logging module)
- [ ] Set up database connection pooling (SQLAlchemy)
- [ ] Add API rate limiting (Slowapi for FastAPI, Django middleware)
- [ ] Configure CORS for Vue dev server

**Testing**:
- [ ] Unit tests for Vue components (Vitest + Vue Test Utils)
- [ ] Unit tests for Python API (pytest + pytest-asyncio)
- [ ] Test coverage >= 80%

**Quality Gates**:
- ✅ Authentication flow working end-to-end
- ✅ All API endpoints validated with Pydantic
- ✅ Vue components accessible (axe-core passing)
- ✅ Unit tests passing with 80%+ coverage
- ✅ No critical security vulnerabilities (Bandit scan for Python)

**Estimated Effort**: 60-80 hours

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### Week 3: Integration, Testing & Optimization

**Description**: Integrate Vue and Python backend, comprehensive testing, performance optimization

**Primary Agents**: Maria-QA, Marcus-Python, James-Vue

**Integration Tasks**:
- [ ] Full integration of Vue frontend and Python backend
- [ ] End-to-end testing with Playwright or Cypress
- [ ] API integration testing with realistic data
- [ ] Error handling and user feedback (Vue toast notifications)
- [ ] Loading states and skeleton screens
- [ ] Implement pagination with Vue Composables

**Performance Optimization**:
- [ ] Frontend: Code splitting with Vue Router lazy loading
- [ ] Frontend: Image optimization (WebP, lazy loading)
- [ ] Frontend: Vue reactivity optimization (computed, watch)
- [ ] Backend: Database query optimization (SQLAlchemy query analysis)
- [ ] Backend: Caching layer (Redis for session/API cache)
- [ ] Backend: API response compression (gzip middleware)
- [ ] Load testing with Locust or k6 (target < 200ms API response)

**Security Hardening**:
- [ ] OWASP Top 10 compliance check
- [ ] SQL injection prevention (parameterized queries via ORM)
- [ ] XSS protection (sanitize inputs, Content Security Policy)
- [ ] CSRF protection (double-submit cookie pattern)
- [ ] Rate limiting and DDoS protection
- [ ] Security headers (FastAPI middleware or Django settings)
- [ ] Dependency vulnerability scan (Safety for Python, npm audit)

**Accessibility & SEO**:
- [ ] Accessibility audit with axe-core (WCAG 2.1 AA)
- [ ] Keyboard navigation testing
- [ ] Screen reader testing (NVDA, VoiceOver)
- [ ] Vue SEO optimization (vue-meta or Nuxt if SSR)
- [ ] Sitemap generation

**Quality Gates**:
- ✅ All E2E tests passing
- ✅ Lighthouse score >= 90
- ✅ API response times < 200ms (95th percentile)
- ✅ Security scan passed (Bandit + npm audit)
- ✅ 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-Python, James-Vue

**Polish Tasks**:
- [ ] User acceptance testing (UAT) with stakeholders
- [ ] Bug triage and resolution
- [ ] Vue transitions and animations
- [ ] Error messages and user guidance improvements
- [ ] Performance profiling (Vue DevTools + Python profilers)

**Documentation**:
- [ ] API documentation (FastAPI auto-docs or Django REST framework)
- [ ] Vue component documentation (Storybook or Histoire)
- [ ] User guides and onboarding flow
- [ ] Developer setup guide (README.md)
- [ ] Architecture diagrams
- [ ] Deployment runbook

**Deployment Preparation**:
- [ ] Environment configuration (staging, production)
- [ ] Database migrations tested (Alembic for SQLAlchemy)
- [ ] CI/CD pipeline for automated deployments
- [ ] Rollback procedure documented
- [ ] Monitoring setup (Sentry for errors, Prometheus for metrics)
- [ ] Log aggregation (ELK stack or Loki)
- [ ] Health check endpoints (/health, /metrics)

**Production Deployment**:
- [ ] Deploy Python backend (AWS, GCP, or Fly.io)
- [ ] Deploy Vue frontend (Vercel, Netlify, or Cloudflare Pages)
- [ ] Configure custom domain and SSL
- [ ] Set up database backups (automated daily)
- [ ] Enable monitoring dashboards (Grafana)
- [ ] Post-deployment smoke testing
- [ ] Release notes and user communication

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

**Estimated Effort**: 50-60 hours

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## 🎯 Quality Strategy

### Testing Approach
- **Unit Tests**: Vitest + Vue Test Utils (frontend), pytest (backend)
- **Integration Tests**: API integration with pytest-asyncio
- **E2E Tests**: Playwright or Cypress
- **Load Testing**: Locust (Python) or k6 (target < 200ms API, < 3s page load)

### Code Quality
- **Linting**: ESLint + vue/recommended, Ruff or Black for Python
- **Formatting**: Prettier (Vue), Black (Python)
- **Type Safety**: TypeScript (Vue), Python type hints with mypy
- **Code Review**: Maria-QA reviews all PRs
- **Test Coverage**: >= 80%

### Performance Standards
- **Frontend**: Lighthouse >= 90
- **Backend**: API < 200ms
- **Database**: Queries < 50ms
- **FCP**: < 1.5s, TTI: < 3.5s

### Security Standards
- **OWASP Top 10**: Full compliance
- **Dependency Scanning**: Safety (Python), npm audit (Vue)
- **Authentication**: Secure JWT handling
- **Input Validation**: Pydantic schemas

### Accessibility Standards
- **WCAG 2.1 AA**: Target 100%
- **Keyboard Navigation**: Full support
- **Screen Reader**: Proper ARIA
- **Color Contrast**: >= 4.5:1

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## 🚀 Deployment Checklist

### Pre-Deployment
- ✅ All tests passing
- ✅ Coverage >= 80%
- ✅ No high/critical vulnerabilities
- ✅ Performance benchmarks met
- ✅ Lighthouse >= 90
- ✅ WCAG 2.1 AA passed
- ✅ API docs up to date

### Infrastructure
- ✅ Environment variables configured
- ✅ Database migrations tested
- ✅ SSL configured
- ✅ CDN configured
- ✅ Auto-scaling configured (if needed)

### Monitoring
- ✅ Sentry enabled
- ✅ Prometheus/Grafana configured
- ✅ Log aggregation enabled
- ✅ Uptime monitoring active
- ✅ Alerting rules configured
- ✅ Backups automated

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## 💡 Technology Stack Recommendations

### Frontend
- **Framework**: Vue 3 with TypeScript
- **Build Tool**: Vite
- **State Management**: Pinia
- **Routing**: Vue Router v4
- **Forms**: VeeValidate + Yup/Zod
- **Styling**: Tailwind CSS or Vuetify
- **Testing**: Vitest, Vue Test Utils, Playwright
- **Component Library**: PrimeVue, Quasar, or custom

### Backend
- **Runtime**: Python 3.11+
- **Framework**: FastAPI (recommended) or Django
- **Database**: PostgreSQL
- **ORM**: SQLAlchemy (FastAPI) or Django ORM
- **Authentication**: python-jose (JWT)
- **Validation**: Pydantic
- **Testing**: pytest, pytest-asyncio
- **Logging**: Python logging + structlog

### DevOps
- **Version Control**: Git + GitHub/GitLab
- **CI/CD**: GitHub Actions
- **Hosting**: Vercel (Vue), Railway/Fly.io (Python)
- **Database**: Supabase or Railway
- **Monitoring**: Sentry + Grafana
- **CDN**: Cloudflare or Vercel Edge

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**🤖 Generated by VERSATIL SDLC Framework v6.4.0**
