Main's two payload-depth tests staged a record with no catalog entry and
asserted that the inspector and the single-file store infer its schema from
the payload's first element. C2a refuses a record whose schema id the catalog
lacks (merge-r1-precedence, exact binding), so the guess door is gone. The
inspector test keeps the bound check with a catalog entry that names the
schema; the store inference test goes with the door.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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