Finishing the Project

Back in Module 2, you added a few test contacts by hand with psql. That
was fine for getting the Home page working, but it’s not something you’d
want to repeat every time you reset your database, and it never gave you
any groups to test with.

This module replaces that with a proper seed script — one command that
populates a realistic, varied dataset every time — and closes out the
course with a full end-to-end test pass and some honest next steps for
where you could take this project from here.