V00.74 declarative token-propagation runtime: PropagatingProxy
runtime path, PropagationDiagnosticContributor, and the
PropagateTokenAdvisor.Default wiring consumers depend on. The
matching compile-time wrapper lives in
jCustos-propagation-processor; OIDC strategies (RFC 8693 / 6749
§4.4) ship in the opt-in jCustos-propagation-oidc module.
