shenseanchen/launch-mvp-stripe-nextjs-supabase — reverse-engineered prompt

Build me a modern web app where users can sign up, log in, and manage their account, with authentication handled by Supabase. I want integrated payments using Stripe, including the ability for users to start subscriptions or trials, and get automatically sent nice-looking emails when they sign up, subscribe, or cancel (using a service like Resend). The interface should be clean, responsive, and support dark mode. Please make sure the app handles errors gracefully and is SEO friendly. Use Next.js with TypeScript and Tailwind CSS so things are fast and look good by default. Feel free to check the latest Next.js, Supabase, Stripe, and Tailwind docs online as you build this to make sure everything works smoothly.