As you can see, writing a coding agent in a compiled language makes a ton of sense and gives the benefits of running multiple agents efficiently instead of running into leaks and tools consuming gigabytes of RAM.
That makes no sense, coding harness are just subprocess wrappers + http calls.
What is the benefit if at the end of the day it will spawn make,cmake,python,node.js, or whatever the developer is working on?
With the enormous downside of loosing native/easy extensibility, JavaScript Object Notation (JSON) is derived from JavaScript, it seamlessly parses and dumps.