DSH Web 选中批注插件：选文字→批注→回车随消息发送；气泡隐藏批注块（零闪烁）；回复按 Annotation N 逐条对照（可悬浮芯片）。官方 bundle，零核心改动

Desktop notifications for DeepSeek Harness turn completions, with per-outcome controls and include/exclude keyword rules.