Move shared control/lifecycle/observation/Ticket contracts into feature::contracts. Consumers and host bindings import the neutral owner; providers retain current authorization, explicit combined routing and persisted composition.
Document stable semantic IDs and exact compatibility epochs; connect consumer requirements to the existing planner without a new resolver. Exercise consumer installation/dispatch with contract-only test providers, atomic rejection paths, and parsed-source architecture guards including negative fixtures.
Validation: worker and worker-runtime normal tests and doctests passed; root cargo check, rustdoc with warnings denied, fmt, diff and state-contract names passed. Dependent Server authorization tests require separate stale native-v1 fixture updates captured next.
