The persistence contract requires the catalog to publish every schema its records name and specifies no recovery, so the catalog
is the store's own description: Rust, TypeScript and Python stop inferring a schema name from a payload's first field, as C#
never did, and a store naming an unpublished schema is unreadable in all four. missing-schema-versioned-v3 pins it with payloads
that open with a schema version.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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