Reserved prefix of library-managed vector attribute names. Every index's
vectorAttribute must be exactly this prefix or start with
__dyna_vector_, and no consumer-defined attribute name or table alias may
start with it (enforced at metadata initialization). Vectors are
intentionally never registered in any entity's attribute metadata, so
serialization and copy paths drop them automatically — they live on
canonical rows only.
Reserved prefix of library-managed vector attribute names. Every index's
vectorAttributemust be exactly this prefix or start with__dyna_vector_, and no consumer-defined attribute name or table alias may start with it (enforced at metadata initialization). Vectors are intentionally never registered in any entity's attribute metadata, so serialization and copy paths drop them automatically — they live on canonical rows only.