Software engineering internship project: test a conditional HTTP cache

Original invented practice inputs.

Task: A deterministic cache fixture and assertions for body/validator handling.

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://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Caching

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