FA-21749 / Assistive announcements / Member archive

Retracting one bundle erases unrelated delivery receipts · case 04

The announcement trace violates the stated utterance-bundle contract.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Bundles are atomic ordered speech segments. Open initializes unsealed bundle; part appends [label,text] while unsealed; replace edits matching label only. Seal marks immutable. Dispatch requires sealed and nonempty, emits a single joined label:text string, removes bundle and records delivered ID. Reopen delivered ID clears delivery receipt. Retract drops bundle and receipt. Rename updates label preserving text. Limit truncates number of pending segments from end. Return speech and pending bundle segments/sealed status.

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-5	`[["One: xxxx"], [], []]`	`[["One: xxxx"], [], ["a"]]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

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

Member access is invitation-based. Sign in with your invited account to inspect the sources.