nholisz/RobloxWhitelist ? reverse-engineered prompt

Build me a simple backend for managing a Roblox whitelist, with a small API service that can store users and whitelist entries in a database, and use Redis for caching or session style data if needed.

I want it to be set up so I can configure the database and Redis with environment variables, and run the service on a gRPC port. It should be easy to extend later for Discord based whitelist flows, since there are already folders for discord, server, data, and whitelists.

Please make it clean, runnable, and sensible by default, with clear config loading, basic project structure, and anything needed to start developing right away. If anything is unclear, use current docs online and make practical choices that fit a small production style service.