SelfSteam has been released in versions v0.1.32 and v0.1.33.

SelfSteam is a headless web application for adding and editing non-Steam shortcuts from another device while the target machine stays in Game Mode. The tool ships as a Flatpak for the Steam Deck and Steam Machines.

After version 0.1.31, v0.1.32 no longer closes the code screen on the Steam Deck when moving a stick, and v0.1.33 converts compressed .nsz updates and DLC to .nsp for Switch emulators.

Changes in version 0.1.32:

The code screen no longer closes by itself on a Steam Deck: moving a stick closed it, now only a button press does.

Opening SelfSteam right after an update now restarts its background service straight away, so the new code screen and the SelfSteam Steam shortcut appear without waiting.

Changes in version 0.1.33:

Switch updates and DLC in compressed .nsz form are now converted to .nsp before they are added, like the game itself already is, so Ryubing and Eden can start games that have them.

Source: GitHub