The bean-discovery-wording is a bit odd.
This has been in since CDI-1.1

An archive which:
• contains a beans.xml file with the bean-discovery-mode of none, or,
• contains an extension and no beans.xml file is not a bean archive.
is not a bean archive.

That means even if you have an @ApplicationScoped MyService class in a jar which has a single CDI Extension then this MyServices will not get picked up as CDI bean? At least according to this wording?
Feels mega-weird to me and might conflict with the implicit beans archive definition a few lines below.

I'm pretty sure in OWB we will pick those beans up. How does Weld behave?