DSH 桌面消息提醒插件 / desktop notification and message alerts for DeepSeek Harness web：需要你操作（可操作提醒）与回复完成提醒，系统通知+提示音+标签页标题，设置页开关 + 中英通知语言

Cost governance for DeepSeek Harness: aggregated token/cost metering per model, session and day, session/daily/monthly budget caps with threshold alerts (desktop notification + webhook) and alert/block/degrade over-limit policies, built-in carbon footprin