The runner is 0.3.1 and the desktop app 0.3.1: each kind of job, Linux and Windows, starts and stops on its own (g1t-runner sandbox up and down --only), the settings show a card for each, and a release without the sandbox's images is waited for, not reported as a broken connection.
description = "The program inside a g1t sandbox: runs an agent, checks, a catch-up merge, a review or a GitHub Actions job, and reports back. Also the self-hosted runner, g1t-runner register/run, on your own machines."