FA-36303 / Tab interfaces / Member archive

Comparison tab pair: left comparison binding · case 03

The tab workspace reports an incorrect left comparison binding.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

A comparison tab binds ordered left/right document revisions, labels the direction, permits edits only on editable right side and handles same-document different-revision comparisons.

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	`[["a", 12], ["b", 12], "a \u2192 b", ["a", 6, "b", 12], true, false]`	`[["a", 6], ["b", 12], "a \u2192 b", ["a", 6, "b", 12], true, false]`	Failed

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