Add TypeScript declarations for Vite environment variables including VITE_API_BASE_URL to enable type-safe access to import.meta.env in the frontend application
Add complete NexaFabric project structure including: - FastAPI backend with SQLAlchemy models, JWT auth, RBAC, audit logging, and provider interfaces - React + TypeScript frontend with Vite, Tailwind CSS, TanStack Query, and Zustand - Docker Compose configuration for PostgreSQL, Redis, API, worker, frontend, and nginx - GitHub Actions and GitLab CI workflows for testing, linting, building, and security scanning - Environment