Choose UI · progwon bundle Select and justify UI interaction patterns from user intent, real constraints, accessibility, and product context. Use proactively while planning, designing, implementing, or reviewing an end-to-end service, app, website, dashboard, admin, ecommerce, SaaS, or frontend—even when the user only asks to build the service and does not name components—whenever the work will introduce or choose interactive UI for input, selection, filtering, view switching, actions, navigation, or settings. Also use for explicit control comparisons and behavioral UX audits where replacement is allowed. Do not use for backend-only, API-only, or database-only work; visual-only styling or token changes; or implementation where the interaction pattern is already fixed and review is explicitly out of scope.