These should use the test context's rng, so that they behave the same whether a pre-recorded plan was used, or the plan is being generated.
Zed Server
This crate is what we run at https://collab.zed.dev.
It contains our back-end logic for collaboration, to which we connect from the Zed client via a websocket after authenticating via https://zed.dev, which is a separate repo running on Vercel.