In my harness I have all the code auto injected at startup (doing mostly very small codebases).

I found that every model will still manually check every file/function, they immediately assume that anything in context is stale.

That's sensible because often the user edits stuff while they're running.

What it does is save it from having to grep blindly about the codebase. But I think I'd get roughly the same benefit by just dumping the function headers then.