No, Jules was able to usually edit the code blind and get things working. If they didn't, the customer saw it on the automatic environment created for the PR, told Jules and Jules fixed it. I think I saw one task or maybe two in which Jules actually ran the HTTP server, set up Postgres, ran all the migrations and created a superuser, only to then write some Playwright code that it used to login and take some screenshots.

In other words, so far it didn't feel like including a database will provide us with much, but I am playing with the idea of creating a tiny mock database and including it in the repo, as the real database is around 15GB and contains passwords and names.