Open the Vite URL shown in the terminal. The React app calls http://127.0.0.1:8080 by default. Override it with VITE_API_BASE_URL if the backend runs somewhere else.
This template gives you a React 19 + Tailwind 4 + Express 4 + tRPC 11 stack with Manus OAuth already wired. Procedures are your contracts, types flow end to end, and authentication "just works".