Built a tiny CLI tool nobody asked for and it's the thing every interviewer actually wants to talk about

Made it to fix a dumb personal annoyance — renaming a batch of screenshot files with actual dates instead of the OS default. Two hundred lines, no tests for the first month, nothing impressive on paper. It's mentioned on my resume as one line and it's what every single technical interviewer asks follow-up questions about, way more than the "real" internship project I spent way longer polishing.