Turn any DSH selection into a reviewable quote — comment / add to chat / side chat, source highlights and jump-back, a searchable review list, side threads, revisions, and per-quote reply badges.

Follow the tangent. Keep the thread. Annotate, explore on the side, and bring answers back to DeepSeek Harness. / 思路可以分岔，主线始终向前。划选注释、侧边追问，再把结论带回正在推进的任务。