vibe21-web-preview

Opens a live preview of the site. The server stays out of the way. You watch how changes are applied.

Need Node.js and pnpm. If either is missing, run vibe21-system-check first.

When to use it

Run it after vibe21-web-new, or any time you want to see the current site without touching the stack yourself.

/vibe21-web-preview

The agent starts pnpm dev in the background and reports the URL. It does not open a browser unless you ask.

If http://localhost:3000 already responds, the skill reuses that server. A second process is not started.
If node_modules is missing, pnpm install runs first. The agent does not ask.
The default URL is http://localhost:3000. If Next.js prints another Local URL, that one is used.
Edits from later skills appear in the same preview.

This is step 04 in the quick start. After it is live, you vibe.