FA-11422 / Accessibility interaction semantics / Member archive

Error text replaces persistent instructions in the description channel · case 02

Invalid controls lose their usage hint, or error text remains announced after validation succeeds.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Given a name, hint, error text and invalid boolean, return [name,description]. Description joins nonempty hint and (only when invalid) error with one space. Name is preserved verbatim. This models channel assembly, not reference resolution or validation timing.

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
hint remains with error	`["Field 2", "Required"]`	`["Field 2", "Use digits Required"]`	Failed

MEMBER ARCHIVE

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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