Header presence policy: which facets a request carries, from its identity,
endpoint family and explicit features only. It never sees raw headers, URLs
or session state (the edge normalizes those into the three inputs) and never
renders values (the providers in facets.ts do).
Header presence policy: which facets a request carries, from its identity, endpoint family and explicit features only. It never sees raw headers, URLs or session state (the edge normalizes those into the three inputs) and never renders values (the providers in
facets.tsdo).