The harness publishes canonical field rosters for the producer vocabularies it admits.
This home owns the authored mutation-discovery and benchmark rows.
Each row keeps its field name, shape, and cardinality together before the descriptor home projects it into the public schema surface and canonical root identity.
The bank states producer-facing vocabulary only.
It does not own the runtime values that cross those fields, admit a delivery, derive schema identity, or decide what any producer observation means.