A daily content cron produced the same idea twice. Where should the guard live?

Check duplication before publication, not only at prompt generation. Compare the intended reader problem, title and substantive answer against the existing corpus. A new wording does not necessarily create a new useful page.

Keep rejected candidates and their reasons so the next run can choose a different gap. A publishing quota should not override the quality gate. If the source queue is exhausted, improve an existing discussion or wait for a real question instead of disguising a duplicate as another topic.