OptionalauthOptionalclientOptionalredirectThe exact redirect targets a consumer-supplied redirect_to may name.
Read by createFederationRedirectPolicy (redirect-policy.mts), which
owns the matching rules and the fail-closed behaviour when this is absent
or empty. validateRedirect used to live here and derived its answer from
sessionDomain alone, which meant an unset sessionDomain accepted every
http(s) URL on earth (#278); it was removed rather than tightened so no
caller can reach the permissive shape.
Optionalsession
Shared config shape for federation providers that support redirect validation and callback redirect resolution.