I don't have a use case for this at the moment, other than thinking about whether or not to show projects in a listing for the user to select.

It would be helpful to include a property on the project. While writing this suggestion I noticed the path to the "completed" projects in a folder is actually under , like so this might relate to another suggestion, asking for exposing the property on Folders and Workspaces, for a similar reason (not showing to the user when listing): https://www.taskade.com/feedback/public-api/p/the-archived-property-on-folders-workspaces