v3.9.0 - Q&A Enhancements & Breakout Outline Integration - `!question <hash>` - Expanded question view with full context - `!clarify <hash> <text>` - Add clarifications/elaborations to questions - `!accept <hash> <answer_id>` - Accept answer as solution (DMs answerer) - `!reject <hash> <answer_id> <reason>` - Reject with reason (DMs answerer) - Full question text in `!questions` list (no truncation) - Cross-group question lookup for expanded view - Outline document auto-created when breakout starts - Public share link in welcome message - Outline link in late joiner catch-up DM - Document updated with full summary when session ends - New tables: q_and_a_clarifications, q_and_a_answer_responses - New columns on q_and_a_answers: status, rejection_reason, answerer_uuid - New columns on breakout_rooms: outline_document_id, outline_url