Before running any tests, make sure you have uv installed (and ideally run make sync after).
make tests
make tests runs the shard-safe suite in parallel and then runs tests marked serial
in a separate serial pass.
We use inline-snapshots for some tests. If your code adds new snapshot tests or breaks existing ones, you can fix/create them. After fixing/creating snapshots, run make tests again to verify the tests pass.
make snapshots-fix
make snapshots-create