Fail closed when gizmoduck user-label lookup is Err or missing - #144
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This was referenced Sep 7, 2026
GizmoduckAuthorHydrator kept Failed/omitted reads in the batch, then assemble used get_or_default so SpamHighRecall and LowQuality looked absent. Omit those ids before assemble. Confirmed NotFound stays unlabeled.
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Parking this intern-stack PR per operator GitHub cleanup (2026-09-08). Hunt notes remain local. Not a reject of the class. |
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Bug
GizmoduckAuthorHydratorkeeps Failed and omitted gizmoduck reads asHydrated::Failed.CandidateFeatures::assemblethen callsget_or_default, which turns that into emptyAuthorFeatures/ emptyUserLabelSet.SpamHighRecallUserLabelRule(and sibling OON user-label drops) only check type presence. An empty set is Allow. A store error therefore lets a SpamHighRecall or LowQuality author keep ranking.Ok(None)/NotFoundis a confirmed unlabeled author. That path is unchanged.This is not #103 (allowlist store). This is not #125 (home-mixer origin-author NSFW/size). This is not #139 (tweet RTF / Manhattan safety-label hydrator). This is the VF gizmoduck consumer of user labels.
Five-line proof
GizmoduckAuthorHydrator/author_lookup_failed(get_or_defaultused to collapse Err/missing into empty labels)FilterTweetsomit-from-hydrate ->Verdict::unresolved_authorDropSpamHighRecallUserLabelRulenever firedfailed_ids. This is gizmoduck user labels.Change
Track Failed / missing gizmoduck author reads. Do not assemble them as default empty labels.
retain_candidates_with_usable_author_featuresomits those ids before assemble. ConfirmedNotFoundstays unlabeled and serves.Tests
NotFoundis not a failureStandalone decision-table harness (same match arms): 11 assertions passed.
cargo testcannot run. Public dump has no VF crate manifest.Fork PR: none