Make a diagram

A diagram shows a stranger a mechanism they would otherwise assemble from prose: what comes in, what checks it, where each path goes. This skill owns the drawing. On an Artifact page, make-artifact owns the page around it and artifact-diagramming owns the inline-SVG mechanics (viewBox sizing, markers, a self-contained <svg>). Where they differ, this skill wins: text is 15px or larger, and the figure carries no caption.

1. Settle the domain