applet_namespace_mismatch· reason_code· applies to state_resolution, auth_decisionSub-reason for a delegated-handoff Event rejection when auth_data.executed_by is not within the applet_id registration's declared service / bot DID set or namespaces.actors pattern. Prevents a grant scoped to one applet from being exercised under an unrelated applet_id. See zh/extensions/applet-integration.md §11.