I asked it for it's harness and then asked agy to do a teardown. It's a monolithic 332MB binary written in Rust from scratch.
Full teardown is here:
https://gist.github.com/simonpure/d6f960045334453360eff1e2a0...
Full teardown is here:
https://gist.github.com/simonpure/d6f960045334453360eff1e2a0...
This teardown answers pretty much all the questions I had after I looked at it. Great job.
Maybe they just don't consider it to be their moat/secret sauce.