Build the per-extension canonicalization output schema: an object of
canonicalClaims (each carrying the canonicalizer fields merged with
the extension's claim fields) + mentionToClaim. Exported so a
cheaper pipeline whose single combined LLM call emits canonical
claims can request the identical extension-shaped output, keeping the
canonicalization slot's schema uniform across pipelines.
Build the per-extension canonicalization output schema: an object of
canonicalClaims(each carrying the canonicalizer fields merged with the extension's claim fields) +mentionToClaim. Exported so a cheaper pipeline whose single combined LLM call emits canonical claims can request the identical extension-shaped output, keeping the canonicalization slot's schema uniform across pipelines.