omena-refinement-trait
Role
omena-refinement-trait is the interface-only cycle breaker for refinement
predicates shared by cascade, refinement, and proof layers.
Contract
It defines PropertyIndexV0, RefinementPredicateV0, typed verdicts,
provenance, witnesses, and refinement decisions without importing an
implementation backend.
Consumers
Cascade, refinement, and proof crates exchange typed decisions through this small dependency.
Boundaries
The crate evaluates no CSS and runs no solver. Adding implementation dependencies here would recreate the cycle it is designed to prevent.
Verification