I was working some time ago on LLM assisted optimizations and algorithm discovery and this does not look like a novel idea.
AlphaEvolve from google is evolutionary algorithm which uses LLMs for Idea generation following very similar loop:
- https://deepmind.google/blog/alphaevolve-a-gemini-powered-co...
- Open source implementation of the algorithm: https://github.com/algorithmicsuperintelligence/openevolve