FA-21333 / Assistive announcements / Member archive

Identical summaries in different forms suppress each other · case 03

The announcement trace violates the stated error-announcement-digest contract.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Errors are keyed by [form,field,code] and retain first-seen ordering. Add replaces text for same key. Resolve deletes exact key. Rename-form transfers its keys preserving per-key text. Digest for a form emits first error text plus remaining count, or all-clear if none; consecutive identical digests for the same form are suppressed. Invalidate clears only that form digest cache. Clear-form removes its errors. Return digest output and ordered errors.

Why this case matters

Deterministic controlled model of assistive announcement delivery.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
trace-2	`[[["f", "samesamesame; 0 more"], ["g", "samesamesame; 0 more"]], [["f", "x", "bad", "samesamesame"], ["g", "y", "bad", "samesamesame"]]]`	`[[["f", "samesamesame; 0 more"], ["g", "samesamesame; 0 more"], ["f", "samesamesame; 0 more"]], [["f", "x", "bad", "samesamesame"], ["g", "y", "bad", "samesamesame"]]]`	Failed

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