protocol: add casehub-work Hibernate package requirements (runtime.model + runtime.filter)

[mdproctor]

What to add

A protocol file in docs/protocols/ documenting that consuming casehub-work in a Quarkus app with explicit quarkus.hibernate-orm.packages requires both packages:

quarkus.hibernate-orm.packages=io.casehub.work.runtime.model,io.casehub.work.runtime.filter,...

Omitting io.casehub.work.runtime.filter causes a FilterRule entity not found error at startup with no clear indication of the missing package. FilterRule is a JPA entity in the filter package used by casehub-work's label-based routing feature.

Suggested protocol slug

casehub-work-hibernate-packages.md

Also

Update docs/integration-guide.md in casehub-work to document the runtime.filter package as a required Hibernate scan target alongside runtime.model.

Garden entry

GE-20260513-74dc72 in the discovery garden covers this as a cross-project gotcha.