A) That is beautiful, thank you for sharing

B) Does it actually address the image problem? The config appears to be using the built in inline-images, which don't support responsive widths.

Even getting rid of responsive widths, simply embedding the image into the buffer isn't really good enough for handwritten notes -- you need at least the ability to crop/zoom.

I'm not sure whether it solves the problem you mention. But it might be a good starting point. If you can roll your own solution, I'd be very interested in hearing about it, and probably most org users! I keep my scanned notes in separate files, though.