Storybook Vercel deployment

[mathieusouflis]

What to build

Deploy Storybook to Vercel with per-PR preview URLs and add a Storybook intro page for consuming-app setup docs.

This is a HITL slice — it requires manual action in the Vercel dashboard to create the project and connect the GitHub integration.

Steps:

1. Create a Vercel project linked to version14/ui
2. Set build command to storybook build, output directory to storybook-static
3. Enable GitHub integration — Vercel will post a preview URL comment on every PR
4. Add a Storybook intro page (src/stories/Introduction.mdx or similar) documenting:
   • How to install @version14/ui in a consuming app
   • How to configure PandaCSS with the exported preset
   • How to wrap the app root with ThemeProvider
   • solar-icon-set peer dependency installation

Acceptance criteria

• Opening https://ui.version14.dev (or the assigned Vercel domain) loads Storybook
• Opening a PR causes Vercel to post a preview URL comment on the PR
• The intro page is the first item in the Storybook sidebar and covers all four setup steps
• The @version14/ui/preset import example in the intro page is copy-pasteable and correct

Blocked by

• Repo scaffold + build pipeline #2 (Repo scaffold + build pipeline)
• GitHub Actions CI pipeline #14 (GitHub Actions CI pipeline)
• All component issues (Token system + PandaCSS preset #3–Navbar component #13) — ideally deploy after all stories exist