Hi,
yes, this is possible with a PoE camera. What you're looking for is Standalone mode, where the app runs directly on the device at boot and sends results (e.g. via TCP) without needing a host.
Note: The “Edge mode” in depthai_movenet
just means the inference runs on the device, but it still requires a host to launch the pipeline. Standalone mode is different. More info and setup guide: https://docs.luxonis.com/software/depthai/standalone