Hi! I'm glad you had a positive experience trying Decker!
Building "standalone" executables for various operating systems is possible, though it isn't a one-click solution presently. You can freely redistribute and rename the official Decker executables for Windows or MacOS alongside a deck named "start.deck", which will open automatically when you launch the program. There's some details in the reference manual under "startup".
For whatever it's worth, Decker is developed entirely without the use of any form of "genai" tooling, and it in turn depends only upon SDL, which has a firm anti-LLM contribution policy.