fix: null rows silently decoded as values (three validity representations dropped) + NullArray CSV export#212

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fix/raincloud-null-corruption

Jul 6, 2026

Commits on Jul 6, 2026

test: add Raincloud real-world conformance harness (#205)

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fix: lazy dict decode for I8/U8/I16/U16 value columns (#206)

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fix: propagate row validity through wrapper decoders; NullArray CSV export

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test: triage round 2 — 10 more corpus slugs (13 ok total); gap catch widened

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test: flip four #208-blocked slugs to ok after rebase onto its merge

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review: narrow gap catch, guard untrusted pool codes, harden hydrate script

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test: flip seoul to ok after #209 merge; refresh triage counts

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test: deterministic coverage for validity propagation (#210 review)

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