Mouse not required
This is done by sending StopCommand to shepherdd, not by natively
closing the window. Sway initiates this to avoid any issues with
shepherd-launcher not having focus (as it won't when an activity is
running).
This implementation allows each platform to choose how to launch Steam (on Linux, we use the snap as the examples suggested before), and keeps Steam alive after an activity exits so that save sync, game updates, etc. can continue to run.
Change written by Codex 5.2 on medium:
Consider this GitHub issue https://github.com/aarmea/shepherd-launcher/issues/4. On Linux, an activity that uses the "steam" type should launch Steam via the snap as shown in the example configuration in this repository.
Go ahead and implement the feature. I'm expecting one of the tricky bits to be killing the activity while keeping Steam alive, as we can no longer just kill the Steam snap cgroup.
