Field maps, export cleanup, and readiness checks. The work that has to happen before any other spec here produces a number you can trust.
Inventories what your system actually stores — real API names, fill rates, and the three places the same value lives.
Turns a raw export into a validated dataset, with every row it could not clean listed rather than silently dropped.
Before you run any spec in this directory, tells you whether your data supports it — and what to fix first.