/bff/chat/create-ticket-from-turn

The Agent emits a \``propose-ticket` fenced block in its answer when it cannot resolve the operator's request. On confirmation, the client posts this endpoint with { roomId, kind }; the server reads the full chat transcript, composes title/description/priority via askAIJson, and creates either a BizKitHub support ticket or an internal issue in the operator's own default project. Returns the new issueKey and its admin URL.