FA-36788 / Tab interfaces / Member archive

Related tab opener path: transitive opener subtree · case 03

The tab workspace reports an incorrect transitive opener subtree.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

An opener path lists ancestor tab IDs from root to direct opener. Related tabs are inserted after the opener subtree in strip order; closing an opener reparents descendants by removing that identity from their paths.

Why this case matters

Offline tab/panel workspace behavior; no browser or desktop framework is emulated.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
workspace regression 0	`[["b", "d"], ["b", "d"], 4, ["a"], {"a": [], "c": ["a"], "d": ["a"], "e": []}, "a"]`	`[["b", "d"], ["b", "c", "d"], 4, ["a"], {"a": [], "c": ["a"], "d": ["a"], "e": []}, "a"]`	Failed

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