merge: integrate Emmanuel changes into main

frontend/package.json

@@ -5,7 +5,8 @@
   "type": "module",
   "scripts": {
     "dev": "vite",
-    "build": "vite build",
+    "build": "vite build && node scripts/prerender.js",
+    "prerender": "node scripts/prerender.js",
     "lint": "eslint .",
     "preview": "vite preview",
     "test": "vitest run",
@@ -13,6 +14,7 @@
     "test:coverage": "vitest run --coverage"
   },
   "dependencies": {
+    "@marsidev/react-turnstile": "^1.6.1",
     "react": "^19.2.6",
     "react-dom": "^19.2.6",
     "react-router-dom": "^7.17.0"
@@ -32,6 +34,7 @@
     "eslint-plugin-react-refresh": "^0.5.2",
     "globals": "^17.6.0",
     "jsdom": "^29.1.1",
+    "playwright": "^1.62.1",
     "tailwindcss": "^4.3.0",
     "vite": "^8.0.12",
     "vitest": "^4.1.10"