Software engineering internship project: keep a search URL intact

Original invented practice inputs.

Task: A URL builder/parser round-trip test with spaces, ampersands and repeated keys.

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/API/URLSearchParams

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