feat: re-introduce regression testing suite with pnpm

package.json

@@ -26,15 +26,21 @@
     "zod": "^3.22.4"
   },
   "devDependencies": {
+    "@playwright/test": "^1.57.0",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.1",
     "@types/node": "^20",
     "@types/react": "^18",
     "@types/react-dom": "^18",
     "@types/uuid": "^10.0.0",
+    "@vitejs/plugin-react": "^5.1.2",
     "autoprefixer": "^10.0.1",
     "eslint": "^8",
     "eslint-config-next": "14.2.23",
+    "jsdom": "^27.3.0",
     "postcss": "^8",
     "tailwindcss": "^3.3.0",
-    "typescript": "^5"
+    "typescript": "^5",
+    "vitest": "^4.0.16"
   }
 }