I lived with windows jumping monitors for years. Vibecoded the fix in under 24 hours.

Every time my Mac woke up, got unlocked or went back on the dock, my windows ended up piled on one monitor. I'd spend the first minutes of the day dragging them back. Every single time.

I tried several apps, Stay among others. Most of them want you to save a layout and restore it, and since my setup changes during the day, the saved layout was always out of date. So one day I got fed up and sat down with an AI to build exactly what I wanted: a menu bar app that remembers where each window was and puts it back when the displays come back. No layouts to save.

I had a working version in under 24 hours. The code wasn't the hard part. macOS was: identical monitors can report the same serial number, sleep counts as a disconnect, and if you save on a timer you end up saving the mess macOS just made instead of your real layout. I shipped it as Many Displays (manydisplays.com, 14-day free trial).

Curious: what's the longest-standing annoyance you finally fixed by vibecoding your own tool?