Project session replay #186
Description
RootPainter already stores everything needed to replay a user's annotation session:
- Images and segmentation PNGs in the project directory
- Annotation PNGs saved at each step
- Mouse interaction logs (locations.csv) with timestamps, coordinates, brush size, colour, and drawing state
A replay feature could reconstruct the session visually — showing the image, annotation building up stroke by stroke, and segmentation updating — useful for debugging, understanding user behaviour, and demo/teaching purposes.