I do think the discovery piece is hugely valuable. I’m fairly capable with grep and ag, but asking Claude where something is in my codebase is very handy.
I've always gone from entry point of the code (with a lot of assumptions) and then do a deep dive of one of the module or branches. After a while you develop an intuition where code may be (or follow the import/include statement).
I've explored code like FreeBSD, Busybox, Laravel, Gnome, Blender,... and it's quite easy to find you way around.
