Expand description
Control-plane vsk sub-kinds (CORD-02 Appendix B). Identical numbering to
v1 (community::roster) — that is deliberate, the registry is shared. 7 is
retired upstream (the v1 owner attestation, obsoleted by the self-certifying
community id); 11 is claimed by Vector for the v1-side migration pointer and
never appears on the v2 wire.