I Asked AI to 'Refactor This Nicely' and Got Unwanted Decimals and Dataclasses

I handed a 40-line order processing function to Claude Code and said "refactor this nicely." What came back: Decimal class, dataclasses, logging module, full type hints, and a Strategy pattern. 120 lines. I asked for none of it. Does it work? Yes. Is it readable? Yes. Will the reviewer say "do I really have to review all of this?" Also yes. And the SQL injection fix I actually needed? Buried somewhere in the diff. So I ran an experiment. Same code. Two prompts: vague vs. specific. Here's what ha