I did try publishing the form directly to a form library. It says that "Sandboxed solutions are not enabled on the SharePoint site collection. To continue, contact a site collection or farm administrator or publish the form template as an administrator-approved form template."
So I then published the form to a SharePoint library as an administrator-approved form template. It published successfully. I can open it in InfoPath Filler but I cannot open it in the browser. I get the following error message.
This form cannot be opened in a Web browser. To open this form, use Microsoft InfoPath.
Click Close to exit this message.
Hide error details
Correlation ID:9c059621-8612-4da3-bba8-771a14c74d50
It seems that SharePoint Online--unlike "regular" SharePoint--does not, to my knowledge, provide a way to give admin approval to form templates, so I don't see how I can deploy a qRules form there.
At this juncture I would like to know how we can use qRules forms in an off-premises SharePoint hosting environment (whether with Microsoft or someone else) without having to package the code through Visual Studio. Any advice would be greatly appreciated.