HumanSignal/labelImg ? reverse-engineered prompt

Build me a simple desktop app for labeling images with bounding boxes.

I want to open a folder of photos, click an object, draw a rectangle around it, and save the annotations next to the image. It should let me switch between common export formats like Pascal VOC, YOLO, and CreateML, and it should support a predefined class list so I can label things consistently. I’d also like basic quality of life stuff like moving or copying boxes, keyboard shortcuts, and the ability to show labels again when I reopen a folder.

Make it easy to run on Python with a Qt based interface, and keep it working on desktop platforms. If there are any current install or dependency details that matter, look up the latest docs online and use the safest approach.