A caller needing exact pairs asks once per schema. The limit is stated rather
than answered with a third addressing list.
Naming a family is parked, but not because there is nothing to name. In one
process a family is an assignability check; over the wire there is no type
system, and nothing publishes the hierarchy where a caller can see it. The fix
is a catalog entry naming each leaf's base chain, which is small work that
moves the catalog's shape, so it belongs in a cut already touching it.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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