Add Help Menu in NodeLibrarySidebarTab (#3922)

Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: Claude <noreply@anthropic.com>

package.json

@@ -35,6 +35,7 @@
     "@pinia/testing": "^0.1.5",
     "@playwright/test": "^1.44.1",
     "@trivago/prettier-plugin-sort-imports": "^5.2.0",
+    "@types/dompurify": "^3.0.5",
     "@types/fs-extra": "^11.0.4",
     "@types/lodash": "^4.17.6",
     "@types/node": "^20.14.8",
@@ -92,12 +93,14 @@
     "@xterm/xterm": "^5.5.0",
     "algoliasearch": "^5.21.0",
     "axios": "^1.8.2",
+    "dompurify": "^3.2.5",
     "dotenv": "^16.4.5",
     "firebase": "^11.6.0",
     "fuse.js": "^7.0.0",
     "jsondiffpatch": "^0.6.0",
     "lodash": "^4.17.21",
     "loglevel": "^1.9.2",
+    "marked": "^15.0.11",
     "pinia": "^2.1.7",
     "primeicons": "^7.0.0",
     "primevue": "^4.2.5",