Cost governance for DeepSeek Harness: aggregated token/cost metering per model, session and day, budget caps with threshold alerts and over-limit policies, carbon footprint estimation, per-model latency benchmarks, a Settings budget tab, and the /budget command
DeepSeek Harness web plugin: DeepSeek balance & platform usage monitoring inside the official Settings-Models-DeepSeek card, plus a live balance chip left of the model name in the composer tool row. Ported from DeepSeekMonitorWindows.