The Worg git repository is hosted on SourceHut.
The build manifest takes care of running the publish.sh script and uploading the generated HTML pages to orgmode.org. Failures when building Worg are sent to the org-build-failures mailing list.
When you push a commit, it can take up to 10 minutes for the change to be visible online. You can check the build status here.
You can adapt this publish.sh script (especially the org-mode and
htmlize.el load path) to test it locally.
You can also inspect the nginx configuration of the server exposing orgmode.org.
Please don’t use file variables in your org files.
Also see the worg-editing page for more suggestions.
No. The default automated export does not allow code execution on the server for security reasons.