Simple HTTP link to latest version of file

Overview of the Feature Request

As a user, I would like to have a simple HTTP link to the latest version of a file in a dataset that regularly updates.

What existing behavior do you want changed?

The newish dirindex feature was meant to support this, but it is not implemented in a way that provides the desired behavior. For example, if I go to this dirindex: https://dataverse.geus.dk/api/datasets/:persistentId/dirindex?persistentId=doi:10.22008/FK2/OHI23Z I see a list of files. There are two issues:

1. If I select a file and copy URL, the URL no longer contains the filename, so it is somewhat meaningless to humans, and therefore more difficult to share or understand when used in code

2. The datafile/nnnn links to a specific version of the file. There is no latest URL that I can use.

Any related open or closed issues to this feature request?

https://github.com/IQSS/dataverse/issues?q=dirindex

Start with the dirindex endpoint shown in the issue and inspect how its selected-file links are generated, along with the datafile/nnnn URL behavior. Done means a selected file has a human-readable URL containing its filename and users can access the latest version through a stable HTTP URL; verify both behaviors against the example dataset.