Use when a task needs current external information, live documentation, recent provider/model behavior, pricing, release notes, or source verification beyond the local workspace.
Use when you have a spec or requirements for a multi-step task, before touching code
Build polished, specific, non-generic frontend web experiences. Use when designing or implementing UI, landing pages, marketing sites, product UI, dashboards, editorial layouts, or conversion flows. Produces and maintains a project DESIGN.md token system so visual decisions persist across sessions and models.