FA-44444 / Data systems / Member archive

A list slice ends at the next parent ordinal · case 04

A list slice ends at the next parent ordinal.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Gather selected list rows from offset-based child storage. Parent nullness hides child storage; empty valid lists remain []; child nulls remain None. Preserve repeated selected rows and list element order.

Why this case matters

A bounded deterministic data engine model makes representation and changelog faults reproducible.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
shared child offsets	`[[], [4]]`	`[[6], [4, 5]]`	Failed

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