We only learn how often users lose work from support tickets. Each time
the user is told a save failed, persistence now emits a save-failed
audit event with the cause type, the code, whether the queue is still
retrying and how many changes are waiting.
It follows the same rule as the failure toast: a repeated failure of
the slow retry cycle is not counted again. Failures handed to another
handler, such as an expired session, are counted too, since they also
stop the save.
781ac534e0