it reminds me of a recent experiment I did with raymarching & sculpting:
https://nico-boo.com/claysculpter/ (warning: only for desktop and not heavily tested)
You're using triangles? Did you make any progress with raymarching? I read you did some experiments.
Nice project!
sculptgl is based on polygons (tris/quads only, and using webgl for rendering).
As for the other project it was just as a quick and dirty experiments :). https://stephaneginier.com/archive/editSDF/ https://www.shadertoy.com/view/WtjXDW On Unity there is Clayxel and more recently Mudbun, both based on implicit surfaces.
And obviously, the Dreams presentation which is an inspirational must see https://www.youtube.com/watch?v=u9KNtnCZDMI
Did you explore splatter rendering?