Guide for building custom React front-ends on Pega Launchpad using the Pega React SDK (@pega/react-sdk-components). Use this skill whenever users ask about building complete custom front-ends over a Launchpad application. Do not use this skill for questions about DX API methods unless they specifically relate to building a custom front-end. Do not use this skill for questions about custom UX components or the pega-embed web component.