komaruworld/mocktail ? reverse-engineered prompt

Build me a desktop app that lets me run the Android Roblox client on Linux, and also in FreeBSD through Linuxulator if possible.

I want it to download the Roblox client on first launch instead of bundling it, check that it is the right app before starting anything, and keep the last working version if an update breaks. The app should launch Roblox in a normal window, handle the Android and JNI pieces it expects, and connect that to SDL3 with Vulkan or OpenGL so games actually run.

Please make it easy to install and run on Linux x86 64, with a nice launcher style interface and sensible defaults. If you need to look up current setup details or docs online, go ahead. Also include a simple way for advanced users to override Roblox flags with a local JSON config file.