square-full

pnpm dlx shadcn@latest add https://opensourceicon.com/r/fa7-solid/square-full.json

<svg xmlns="http://www.w3.org/2000/svg" width="96" height="96" viewBox="0 0 640 640"><path fill="currentColor" d="M64 128c0-35.3 28.7-64 64-64h384c35.3 0 64 28.7 64 64v384c0 35.3-28.7 64-64 64H128c-35.3 0-64-28.7-64-64z"/></svg>