In a previous professional life, I did financial modelling for a big 4 accounting firm. We had tooling that allowed us to visualize contiguous ranges of identical formulas (if you convert formulas to R1C1 addressing, similar formulas have the same representation). This allowed for overrides to stick out like a sore thumb.

I suspect similar tools could be made for Claude and other LLMs except that it wouldn't be plagued by the mind-numbing tedium of doing this sort of audit.