Build a frontend prototype in an isolated workspace and expose the live result

This workspace gives one persistent Vercel Sandbox to each chat, lets the model write HTML, CSS, and JavaScript files, and renders the generated app through AI Elements WebPreview.

Setup requiredopenai/gpt-4.1-mini

Vercel Sandbox credentials are missing. Add VERCEL_OIDC_TOKEN or the VERCEL_TOKEN, VERCEL_TEAM_ID, and VERCEL_PROJECT_ID trio.