Most CSV diff tools compare by line position, not row identity — so a single reordered or deleted row cascades into dozens of false-positive changes. Here's why key-aware diffing fixes it.

What JSON Schema actually is, how to generate one from a real sample instead of writing it by hand, and how to use it as a CI gate that catches breaking API changes before they ship.

What actually happens during a JSON-to-CSV conversion: flattening nested objects, handling arrays of objects, type inference going the other direction, and the delimiter/encoding traps that corrupt spreadsheets.