chore: initial project setup with backend, frontend, CI/CD, and documentation

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

frontend/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "nexafabric-frontend",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite --host 0.0.0.0",
+    "build": "tsc -b && vite build",
+    "preview": "vite preview --host 0.0.0.0",
+    "lint": "eslint .",
+    "test": "vitest run",
+    "e2e": "playwright test"
+  },
+  "dependencies": {
+    "@tanstack/react-query": "^5.55.4",
+    "clsx": "^2.1.1",
+    "lucide-react": "^0.468.0",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "react-router-dom": "^6.26.2",
+    "zustand": "^4.5.5"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.46.1",
+    "@testing-library/jest-dom": "^6.4.8",
+    "@testing-library/react": "^16.0.1",
+    "@types/react": "^18.3.5",
+    "@types/react-dom": "^18.3.0",
+    "@vitejs/plugin-react": "^4.3.1",
+    "autoprefixer": "^10.4.20",
+    "eslint": "^9.9.1",
+    "jsdom": "^24.1.1",
+    "postcss": "^8.4.41",
+    "tailwindcss": "^3.4.10",
+    "typescript": "^5.5.4",
+    "vite": "^5.4.2",
+    "vitest": "^2.0.5"
+  }
+}