The web server read XDG_CONFIG_HOME through a redundant typeof guard on a
value that is already string|undefined, which tripped the anti-slop lint on
its own new line and diverged from the VS Code helper. Both now read the
same way. The VS Code provider test also still hard-coded ~/.config/opencode,
so it silently stopped asserting whenever XDG_CONFIG_HOME was set; it now
uses the shared constant, like the web test already does.
Bohdan Triapitsyn
f02dfbd4cb