Building Zenith A solo build log: an AI safety sensor that judges on-device — and physically cannot spy. 2026-08-13T00:00:00.000Z https://zenithsafetysensor.com/ JP Why I'm building a safety sensor that physically cannot spy 2026-08-13T00:00:00.000Z https://zenithsafetysensor.com/log/001-cannot-spy/ My first design was a camera disguised as a smoke detector. The story of why that design died explains everything about what I'm building now.