I was prototyping to this end the other day - what would it be like for a coding agent to have access to a language that can be:

- structurally edited, ensuring syntactic validity at all times

- annotated with metadata, so that agents can annotate the code as they go and refer back to accreted knoweledge (something Clojure can do structurally using nodepaths or annotations directly in code)

- put into any environment you might like, e.g. using ClojureScript

I haven't proven to myself this is more useful/results in better code than just writing code "the normal way" with an agent, but it sure seems interesting.