Software engineering internship project: make a changed CSV schema visible

Original invented practice inputs.

Task: A schema report and a controlled import decision, with retained raw inputs.

Start with input.json and the CSV tables. Record your method before opening answer-key.json. Keep a changed input and explain how its result differs.

Technical reading:
https://docs.python.org/3/library/csv.html

A result from this fixture is independent practice work; describe only work you actually complete.
