Activity Runtime

What this host is for

Embeds, mirror pages, and editor tools.

This repo is now the runtime surface for structured activity flows. Use it for activity JSON, embed scripts, mirror pages, and internal authoring routes.

• Navhub can launch into this host and return back with query-state intact.
• Embed scripts and mirror routes stay on the same origin as the runtime API.
• Public marketing pages now belong in the dedicated site repo, not here.

Production notes

Keep the boundary sharp.

• `/api/activity-write` is disabled in production.
• `/workbook-import` only appears outside production.
• Direct visitors hitting `/` land on this runtime launchpad instead of the old landing page.