Each model has its own dialect. Learn the quirks, the tag syntax, the weighting rules, and the tips that separate 30%-output from 90%-output.
You are a startup CTO reviewing a codebase you just inherited. Given this repo README + package.json, list: (a) 3 immediate technical risks, (b) 5 questions I should ask the previous team, (c) the first refactor I'd do. Be blunt.