sebastian-quintero/mdrp-sim ? reverse-engineered prompt

Build me the meal delivery routing simulator in this repo so I can run a full end to end simulation locally with one command.

It should model users, couriers, and a dispatcher as a discrete event system, use the city routing service and a local Postgres database, and save the results of each run in the metrics tables already mentioned in the README. Keep the current structure in place, but make sure the setup, loading the sample instances, and running the simulation all work smoothly from the main script.

If anything is unclear, follow the README and current code, and look up current docs online if you need to. I’d also like the project to be easy to configure from the settings file, and for the main flow to be clear enough that I can change policies and rerun experiments without digging through everything.