FA-21727 / Assistive announcements / Member archive

Rename cue reverses old and new spoken labels · case 02

The announcement trace violates the stated list-change-narration contract.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

An ordered collection maps unique item IDs to spoken labels. Add inserts at clamped zero-based position; existing ID updates label without moving. Remove announces old one-based position. Move removes then inserts at clamped destination and announces old/new positions. Rename announces old/new labels. Begin silences individual cues while accumulating cue count; end announces only count and clears batching. Reset clears list with no cue. Count command reports current cardinality. Return cues and ordered [id,label].

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	`[[["added", "Old", 1], ["renamed", "Latest", "NewNew"]], [["a", "Latest"]], false, 0]`	`[[["added", "Old", 1], ["renamed", "NewNew", "Latest"]], [["a", "Latest"]], false, 0]`	Failed

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