Rendering in the browser has nothing to do with being able to do remote editing like you can in VSCode - you would just be able to edit files accessible to the browser.

Just like you can hook up local VS code native up to a random server via SSH, browser rendering is just a convenience for client distribution.

You would need a full client/server editor architecture that VS code has.

Zed already has a client/server editor architecture: https://zed.dev/docs/remote-development