More progress: figured out that the deployer wiped out the schema contents, beginning somewhere with this line "INFO: Mapping class: org.jbpm.pvm.internal.identity.impl.UserImpl -> JBPM4_ID_USER" from the deploy ant build logs.
Easily fixed by re-running the example.identities.sql from the demo setup.
That done, I can again log in to the Console and see my process.
But only my process. The examples process is gone. Does this mean 1 process per schema/deploy?
Need learn some more on how this whole deployment works, obviously..