change role to "user" for new registrations, fixed some registration form errors and implemented a reg-test

package.json

@@ -19,6 +19,7 @@
         "eslint-config-prettier": "^10.0.1",
         "eslint-plugin-react": "^7.37.3",
         "eslint-plugin-react-hooks": "^5.1.0",
+        "playwright": "^1.55.1",
         "prettier": "^3.4.2",
         "prettier-plugin-organize-imports": "^4.1.0",
         "prettier-plugin-tailwindcss": "^0.6.11",
@@ -60,7 +61,6 @@
         "html5-qrcode": "^2.3.8",
         "laravel-vite-plugin": "^2.0",
         "lucide-react": "^0.475.0",
-        "playwright": "^1.55.0",
         "react": "^19.0.0",
         "react-dom": "^19.0.0",
         "react-router-dom": "^7.8.2",