Use local data when possible

The preview should use the local data if present. Same as the image. The application should work without online access. A fetch should be done on the LinkCard only if nessecary. (Use timeout for example and listen to the current internet status https://developer.mozilla.org/en-US/docs/Web/API/Navigator/onLine)
For example user create link with internet access. When offline the description and image preview should still be available

Start by tracing the LinkCard preview flow and identify where local description and image data are available before a network fetch. Review the Navigator.onLine guidance linked in the issue and consider the timeout and current internet-status behavior. Done means existing local previews remain usable offline and LinkCard fetches only when necessary.

Written by the indexing model from the issue text.