Verified questions
Good answers become examples the AI uses for similar questions.
When someone gives an AI answer a thumbs up, it appears under Verified questions for review.

- Approved questions are shown to the AI as examples when someone asks something similar on the same database. The AI is told to prefer an approved example when it fits, and the answer says when it reuses one.
- Only the question and the query are kept, never the rows an answer returned.
- Admins review items in Waiting for review, Approved and Rejected.