- Create scripts/setup-sandbox.sh to bootstrap Arch base environment
- Add BuildSandbox class for container management and build execution
- Configure sandbox with network isolation, read-only root, 8GB/4core limits
- Add sandbox_root and iso_output_root settings to config
- Add FastAPI app with title 'Debate API' v1.0.0
- Configure pydantic-settings for environment-based configuration
- Create /health endpoint at root level
- Create /api/v1/health and /api/v1/health/ready endpoints
- Disable docs/redoc in production environment