Collect assistant questions

Return what readers asked your docs assistant, verbatim, with which of it produced no answer — plus the answer rate with its denominator and the languages the questions arrived in. This is the only source on the server where a reader speaks in full sentences. A failed search is three words; an assistant question is the whole job, stated by somebody who wanted it done — which is why it is the raw material under every question about MOTIVE rather than behaviour. Quotes are carried through unparaphrased, because 'how do I rotate a key' and 'where do I regenerate my token' summarise to one bullet and are two different pages. Says plainly what the answer rate is NOT: it counts questions the assistant produced something for, and knows nothing about whether that something was right. Returns an evidence record and the get_ai_questions / get_ai_unanswered calls that produced it — no ranking, no themes, no recommendation. Use it for 'what are people asking the bot', 'show me the unanswered questions', 'what did readers ask last week', «что спрашивают у бота», «на что бот не смог ответить», «покажи вопросы читателей». Grouping those questions into jobs, and deciding which of them is a missing page rather than a missing sentence, is the judgement: ask docsbook_expert with what you are trying to achieve and it gives the method, the reads it runs on, and what would make it wrong. Returns a validated collect_assistant_questions.v1 payload: an evidence map, the normalised rows behind it, and a reproduce block naming the exact MCP calls and arguments that produced every row — run them yourself and you get the same answer. There is no model in the path, so there are no findings, no scores and nothing to disbelieve; interpretation is what the audits charge for. Changes nothing; safe on a read-only token. Evidence, not a verdict — nothing here says what the gap MEANS. If you have not already asked docsbook_expert how to read it, ask: it says what this evidence is worth against, and what to do with it. One call, changes nothing.