I'm installing an extension for the first time from source and assumed
that the sentence

> If you already have a published extension with the same name
installed, your dev extension will override it.

also means that it would override the already installed extension.

Besides that I've had to use `--foreground` mode to also get more
meaningful error messages under NixOS without using
`programs.nix-ld.enabled = true;`.


Release Notes:

- Improved Zed documentation for extension development

---------

Co-authored-by: Peter Tripp <peter@zed.dev>