test(design-system): setup Storybook docs tests [AR-74627]#587
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Summary
Storybook Autodocs Show code snippets and MCP manifest snippets are what agents and developers copy from docs, but nothing in CI caught when those outputs drifted after story edits. Dev Storybook also differs from the production build (e.g. React Compiler), so manual checks against
pnpm startwere unreliable.This PR adds automated docs snippet tests (
*.docs.test.ts) as a dedicated Viteststorybook-docsproject. Global setup builds and servesstorybook-staticon an ephemeral port (same artifact as GitHub Pages), then tests verify both outputs per story:components.jsonand snapshots the storysnippetShared helpers live under
tests/storybook/.test:storybook-docsruns the project explicitly; defaultpnpm testexcludes it (likerequires-build). CI builds Storybook and runs docs tests on PRs. Initial coverage:ds-breadcrumbandds-button-v3. Agent skills and workflows are updated to point authors at the new pattern.