CFI21/m3-nvocc-erp ? reverse-engineered prompt

Build me a Python FastAPI app for an M3 NVOCC ERP backend that connects to PostgreSQL through a DATABASE_URL and is ready to run in production on Render.

I want the app to start cleanly with uvicorn, have a sensible structure for API routes, database access, and migrations, and include enough test coverage that I can trust the basics before deploying. Keep it focused on the ERP backend side, not a fancy frontend, but if there is a simple web entry point or status page in the repo, make sure it works too.

Set it up so it is safe by default, with production traffic, live providers, and real money all turned off unless someone explicitly enables them. Use the existing project context and make sure it fits the M3 NVOCC PROD database target. If you need current docs or best practices for FastAPI, PostgreSQL, or Render, look them up online and follow them.