andrewnakas/gtav-recomp ? reverse-engineered prompt

Build me a desktop launcher and game runtime for GTA V Xbox 360 TU27 that lets me point it at my own Disc 1, Disc 2, and title update, then installs everything, checks the files, and starts the game on Windows, Linux, and macOS.

I want the app to handle the whole flow in a simple way, with a setup screen first, then a Play button, and an easy way to rerun setup later. It should also support building the phone version for iPhone and Android from the same installed game files, and save the generated files locally on my computer. Make sure it can use the bundled code generation and shader translation tools, show clear progress during the long build, and keep logs somewhere easy to find.

If anything in the current docs is missing or unclear, look up the current project docs online and match the existing behavior as closely as possible.