Based solely on the provided article, a developer built an edge AI loitering-alert app for the CamThink NE503 edge AI camera. The project was created to test whether Claude Code could go from a one-sentence requirement to a verified app on a real device. The input requirement was to fire an alert after someone is detected lingering for 10 seconds. The app uses a raw stream (NV12) and the model `hailo_yolov8n_384_640` to detect a person. When a person stays in frame long enough, a dwell timer starts and fires an alert after 10 seconds. The alert is published as an event on the device and turns on the camera white light. The project succeeded because device-specific rules were encoded into a Claude Code skill, called the `ne503-dev skill`, instead of being left in someone else's head. The system workflow involved Claude Code plus the skill generating `app.py` and `app.yaml` from the SDK template, which were then built, uploaded, installed, started, and verified on the NE503.