Ankumeah/SourceFlameBackend ? reverse-engineered prompt

Build me a working backend for a simple git hosting platform called SourceFlame.

It should let people create accounts, log in, manage repositories, and interact with the service through HTTP endpoints. I want it to be usable on its own right now, even if there’s no frontend yet, so make sure the API is clean and the basic flows actually work. Please use the existing Go backend setup, keep docker compose support working, and make sure sqlite is the easy default, with postgres still available if someone wants it.

If anything is unclear, check the docs and the OpenAPI file first, and look up current docs online if you need to. I’d also like the project to run smoothly with the provided environment files, and for the database and session storage pieces to be wired up so I can start it locally without a lot of manual fixing.