The host will send a `SaveBuffer` message anyway and this prevents re-querying the database, which could cause two `BufferSaved` messages to race and, as a result, cause guest to apply them in the wrong order.
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.