Verify sorting in multi-device setup as client.

Perform test that verifies the background sorting script of the multi-device setup, on the server device.

Test it directly after installation, and delete/purge the tasks used to test the sorting script.

In case of backup restoration, perform sorting test before importing backups.

Start by locating the installer and background sorting script in the repository, then review how a multi-device setup identifies the server device. Run the sorting test immediately after installation and before importing backups, and purge the test tasks afterward. Done means both flows are verified without leaving test data behind.

Written by the indexing model from the issue text.