feat: add Node.js/Express API with real data from Desk CRM

- ✅ API completa em /api com TypeScript
- ✅ Google Calendar integration (pessoal + profissional)
- ✅ Queries diretas à BD: tasks, leads, projectos, billing, pipeline
- ✅ Endpoints: /api/dashboard, /api/monitor, /api/health
- ✅ Vite proxy configurado (/api → localhost:3001)
- ✅ App.tsx usa /api/dashboard (não mais dados mock)
- ✅ Migração completa do PHP (index.php + monitor.php)
- ✅ CHANGELOG.md criado para tracking
- ✅ Scripts npm: dev (paralelo), dev:api, dev:ui, start

Dependencies:
- express, cors, mysql2, googleapis
- concurrently, tsx (dev)

Breaking: PHP backend será descontinuado
See: CHANGELOG.md, api/README.md

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

package.json

@@ -1,18 +1,25 @@
 {
-  "name": "plan-eal-v3",
+  "name": "dash-descomplicar",
   "private": true,
-  "version": "0.0.0",
+  "version": "1.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite",
+    "dev": "concurrently \"vite\" \"tsx watch api/server.ts\"",
+    "dev:api": "tsx watch api/server.ts",
+    "dev:ui": "vite",
     "build": "tsc -b && vite build",
+    "start": "node api/server.js",
     "lint": "eslint .",
     "preview": "vite preview"
   },
   "dependencies": {
     "clsx": "^2.1.1",
+    "cors": "^2.8.5",
+    "express": "^4.19.2",
     "framer-motion": "^12.30.1",
+    "googleapis": "^144.0.0",
     "lucide-react": "^0.563.0",
+    "mysql2": "^3.11.5",
     "oidc-client-ts": "^3.0.1",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
@@ -24,17 +31,21 @@
   "devDependencies": {
     "@eslint/js": "^9.39.1",
     "@tailwindcss/postcss": "^4.1.18",
+    "@types/cors": "^2.8.17",
+    "@types/express": "^5.0.0",
     "@types/node": "^24.10.10",
     "@types/react": "^19.2.5",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.1.1",
     "autoprefixer": "^10.4.24",
+    "concurrently": "^9.1.2",
     "eslint": "^9.39.1",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
     "postcss": "^8.5.6",
     "tailwindcss": "^4.1.18",
+    "tsx": "^4.19.2",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.46.4",
     "vite": "^7.2.4"