Almosst-DEV/Cobalt64 ? reverse-engineered prompt

I want you to help me build Cobalt64 from this repo and get it running on a test Mac with an unsupported AMD Radeon card, ideally an RX 9070 XT. I’m mainly trying to understand the full setup, what needs to be cloned separately, and how to compile the driver, the Mesa patch set, and the helper tools without missing anything.

Please walk me through the build and run steps in plain English, and if anything has changed since the README was written, look up the current docs online if you need to. I’d also like you to point out the minimum macOS and OpenCore setup needed, plus any files or commands I should expect to edit before testing. If there are obvious pitfalls, like missing firmware, display limits, or extra dependencies, call those out so I can avoid wasting time.