On September 4 I started a ComfyUI custom node: a canvas with layers and selection tools, so I could fix AI generations without leaving my workflow. On September 7 it became a desktop app. Today, five weeks after that first commit, Scumble is on its 43rd release, in the Microsoft Store, and edits 15,000-pixel pictures without freezing. I didn't type most of that code. Claude Code did. My job was deciding what to build, testing it with my own pictures, and saying "no, not like that" a lot. Thi...