Proto — Browser Experiment

The smallest contract for an editable browser cell: source, run state, result, and an error that stays in place.

Shared evaluation context

Run these cells in order. A definition made in one cell remains available to the next; the deliberate error stays local instead of taking down the page.

Emmy in the same local runtime

The runtime is the same pinned, self-hosted bundle used by the canary. No CDN script is loaded.