The mark can now be edited by hand. 🖌 Brush paints extra area into it (e.g. hair
SAM left out), ➖ Remove cuts out what SAM segments at the points placed and
🧽 Eraser paints what to cut out. Brush and eraser strokes are stored with the
image they were painted on and dropped when the image changes; text and point
entries are segmented again as before.
The canvas is hidden from the side panel (hideInPanel): its legacy renderer wrote
its own width into the widget and shrank the canvas in the node on click.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
