createScriptOverlay
createScriptOverlay(
options):ScriptOverlay
The script overlay: what PreviewOverlay draws in React, drawn imperatively for a page that
never hydrates.
Every decision about what a pin *is* — which elements get one, in what order, what it is called and what it looks like — comes from `pins.ts`, the same module the React overlay calls. This file owns only the DOM plumbing: a container at the end of `
`, one element per box, and the listeners that keep them positioned.