FA-11437 / Accessibility interaction semantics / Member archive

An owned node appears under two accessibility parents · case 02

An explicit ownership edge adds a second copy instead of moving the child.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Input natural maps parent IDs to ordered immediate child IDs, and owns maps owners to ordered claimed IDs. All IDs exist, claims are unique globally, and combined ownership is acyclic. Return parent child lists preserving unclaimed natural order followed by declared owned order. Claimed natural children are reordered into the owned suffix; do not mutate inputs.

Why this case matters

A controlled offline accessibility-data model. It isolates the stated contract; it does not simulate browser accessibility APIs or claim full ARIA conformance.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
same parent explicit order	`{"p": ["a", "2", "b", "b", "a"]}`	`{"p": ["2", "b", "a"]}`	Failed

MEMBER ARCHIVE

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