Makes cluster-nodes functional.

package.json

@@ -16,6 +16,7 @@
     "check": "pnpm run lint && pnpm run type-check && pnpm run test"
   },
   "dependencies": {
+    "@heroicons/react": "^2.2.0",
     "@hookform/resolvers": "^5.1.1",
     "@radix-ui/react-collapsible": "^1.1.11",
     "@radix-ui/react-dialog": "^1.1.14",
@@ -44,6 +45,7 @@
     "@tailwindcss/typography": "^0.5.19",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.0",
+    "@testing-library/user-event": "^14.6.1",
     "@types/node": "^24.0.3",
     "@types/react": "^19.1.2",
     "@types/react-dom": "^19.1.2",