Feature Request: Use grepai if present, or maybe install it??

[matbgn]

Use Semantic Code Search for AI Agents if present to improve queries and reduce tokens usage by a factor 10x:

https://yoanbernabeu.github.io/grepai/

I don't if we should spawn the index process if grepai is not present or freshly installed, or not.

What do you think @mikeyobrien ? Can you please take a look at this tool and guide me for the architectural path to best fit ralph-orchestrator's design, and the way you can imagine implementing it?

[matbgn]

Can also be solved with #27 I guess