json-render Component Catalogs json-render (Vercel Labs, 12.9K stars, Apache-2.0) is a framework for AI-safe generative UI. AI generates flat-tree JSON (or YAML) specs constrained to a developer-defined catalog — the catalog is the contract between your design system and AI output. If a component or prop is not in the catalog, AI cannot generate it. Storybook → catalog import (#1529, 2026-04) When the project ships a Storybook setup, import the catalog from Storybook stories instead of hand-writing one. The bundled importer at reads a manifest and emits a Zod-typed plus a registry. Storybook…