The marker gains a repaint brush (size adjustable) and "make a repaint
mask": the page sends a mask (white where boxes, circles, lines and brush
strokes are) and the server writes the picture with that area as its
alpha to ComfyUI's input folder (anomalous_inpaint_<step>.png, a new file
each time), so LoadImage gives the picture and the area as MASK. The AI's
marks message carries the file and how to inpaint with it; the timeline
says the mask is ready. Canvas tools read ComfyUI's lists anew once when a
value is not among a drop-down's choices, so they take the new file.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>