What problem does it solve? Frontend teams often treat Storybook as a loose demo gallery, leaving stories disconnected from tests, docs, accessibility checks, and PR review. This Skill turns Storybook into a governed execution surface where every story is a stable, reviewable UI state. ## Core Features & Use Cases - Story Map and State Matrix Planning: Builds a component tree, state matrix (default, loading, empty, error, boundary), and interaction matrix before any story is written. - Story Granularity and Authoring Standards: Classifies work into Foundations, Primitive, Pattern, Screen, and Connected layers, then authors modern CSF with TypeScript, args, decorators, globals, and MSW mocks. - Quality Gates and Review Workflow: Binds autodocs, play functions, a11y checks, visual baselines, and PR review links to stories, with a Definition of Done and red-flag audit list. - Use Case: When adding a new OrdersPage, use this Skill to produce a Story Map, write Loaded/Empty/Error stories with MSW handlers, and define the a11y and visual regression gates for the PR. ## Quick Start Ask the agent to design or audit Storybook stories for your component or page, including a Story Map, mock strategy, and quality gates.