Implementation complete du frontend React avec:

1. API Client Service (services/api.ts)
   - Axios client configure avec base URL
   - 12 endpoints mappes (simulation, scenarios, analytics)
   - Types TypeScript pour toutes les requetes/reponses
   - Gestion erreurs et timeouts

2. Types TypeScript (types/simulation.ts)
   - Tous les modeles Pydantic mappes en TypeScript
   - SimulationConfig, SimulationResults
   - NetworkAnalytics, NetworkComparison
   - Interfaces completes pour API

3. Zustand Store (store/simulationStore.ts)
   - Gestion d'etat centralisee
   - Actions: setConfig, startSimulation, computeAnalytical, etc.
   - State: config, results, analyticalResults, comparisonResults
   - Chargement automatique des scenarios
   - Calculs analytiques et comparaisons automatiques

4. Dashboard Layout (components/Dashboard.tsx)
   - Layout principal avec header/footer
   - Grille responsive (sidebar + main content)
   - Notification d...

Initialize Turborepo monorepo with Python backend and React frontend

- Setup Turborepo configuration with workspaces
- Configure Python FastAPI backend
  - Create project structure (core, analytics, api, models)
  - Add requirements.txt with FastAPI, Uvicorn, Pydantic, etc.
  - Basic FastAPI app with health endpoints
  - CORS middleware for frontend integration
- Configure React + TypeScript + Vite frontend
  - Install dependencies (Chart.js, D3.js, Zustand, Axios)
  - Setup Tailwind CSS with PostCSS
  - Create component directory structure
  - Basic landing page with Tailwind styling
- Add comprehensive README files
- Configure .gitignore for Python and Node.js

Phase 1 Complete ✓
Next: Phase 2 - Core simulation engine implementation