almustarik/winner-sop-backend ? reverse-engineered prompt

Build me a backend API for the Winner SOP app using NestJS and Prisma with MongoDB.

I want a clean starter project that can run locally, connect to a Mongo database, and be easy to grow into a real product. Set it up so I can copy the example env file, generate the Prisma client, push the schema, and start the server in development mode without much hassle. Please include the basic app structure, sensible default configuration, and a simple setup for auth related env values like a JWT secret.

Make sure the code is organized, TypeScript friendly, and ready for linting, formatting, building, and testing. If you need current docs for NestJS, Prisma, or MongoDB behavior, look them up online and use the latest recommended approach. I mainly want a solid working backend foundation that follows the README, runs reliably, and is easy for me to extend with real API endpoints later.