feat: Implement security and testing roadmap

package.json

@@ -53,6 +53,7 @@
     "@tanstack/react-query": "^5.83.0",
     "@tanstack/react-query-devtools": "^5.90.2",
     "@tanstack/react-virtual": "^3.13.12",
+    "@types/dompurify": "^3.2.0",
     "@uppy/core": "^5.0.2",
     "@uppy/dashboard": "^5.0.2",
     "@uppy/image-editor": "^4.0.1",
@@ -65,6 +66,7 @@
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
     "date-fns": "^3.6.0",
+    "dompurify": "^3.3.0",
     "embla-carousel-react": "^8.6.0",
     "input-otp": "^1.4.2",
     "lucide-react": "^0.462.0",