The union's absent-column contract is undefined-or-throws, not null (#731) - #740

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philcunliffe wants to merge 6 commits into

Commits on Aug 13, 2026

Union doc claimed an absent column reads as null; it reads as undefined or throws (#731)
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Union drift doc named the wrong mechanism, and the false invariant survived on ai_gateway_messages (#731)
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763c931
Union drift doc omitted `executeProject`'s `resolveable` gate, and the false invariant survived in three more places (#731)
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Merge master into fix/issue-731
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c9aa1f1

Commits on Aug 14, 2026

Descope the union drift doc to the verified parquet-union correction (#731)

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claude
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Merge remote-tracking branch 'origin/master' into HEAD
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