mstan/FireRedLeafGreenRecomp — reverse-engineered prompt

I want a simple Windows desktop build that lets me play Pokémon FireRed and LeafGreen on PC by supplying my own legally dumped USA ROMs, not by bundling any game files. Make it support both games from one codebase, launch the right native app for each one, and refuse to run if the ROM hash does not match the expected version.

The important part is that it should already boot into real gameplay, with keyboard controls for the GBA buttons and save states on function keys. I also want the early build behavior where missing code paths can still run the first time, then get turned into native code and cached on disk so the game gets smoother the more it is played and stays improved on later launches.

Please include the basic build setup and any prompts for selecting the ROM path, and keep everything legal and self contained with no ROM or BIOS redistribution. If you need details, look up the current docs for gbarecomp and wire it up.