FA-21662 / Assistive announcements / Member archive

Obsolete callback transitions the current producer · case 02

The announcement trace violates the stated producer-readiness contract.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Announcement producer has booting/ready/failed state and generation. Start increments generation, enters booting, clears deferred messages. Publish during booting queues; ready publishes directly; failed drops. Ready callback must match generation, drains queued messages FIFO, and is ignored after failure. Fail matching generation clears deferred and announces unavailable once. Retry is a start. Stop fails silently and advances generation. Report speech,state,generation,deferred.

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	`[["newnew"], "ready", 2, []]`	`[[], "booting", 2, ["newnew"]]`	Failed

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