feat: initial scaffold with Event Management, Participant Management, and Budget Management

- Express backend with JWT auth, PostgreSQL, full CRUD APIs
- React + Vite + TailwindCSS frontend with RTL Hebrew UI
- Event Creation & Management (create/edit/delete/list events)
- Participant Management (add/edit/delete/status tracking per event)
- Budget Management (income/expense tracking with balance summary)
- Docker Compose setup with PostgreSQL
- /health endpoint with commit-id and DB status

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "airewit-client",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-router-dom": "^6.21.1",
+    "lucide-react": "^0.303.0",
+    "clsx": "^2.1.0",
+    "tailwind-merge": "^2.2.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.2.43",
+    "@types/react-dom": "^18.2.17",
+    "@vitejs/plugin-react": "^4.2.1",
+    "autoprefixer": "^10.4.16",
+    "postcss": "^8.4.32",
+    "tailwindcss": "^3.4.0",
+    "vite": "^5.0.8"
+  }
+}