dsh-usage-chart: Visualize Token Usage, Cost Estimation, and Account Balance in DSH Web

dsh-usage-chart is a DSH Web Cordis plugin (v1.1.2, MIT) maintained by Max-Samson. It displays token usage, cache hit rate, estimated costs in CNY/USD based on list prices, and account balance beneath the input box. Clicking it expands a zero-dependency SVG panel featuring cost charts per round, context segment stress bars, compression diagnostics, and input source attribution. Data is sourced from official adapter projections and host session logs, with balances queried via host proxy. Installation: `dsh plugin --profile web add dsh-usage-chart`. Requires DSH ≥ 0.1.0-rc.6 and Node.js ≥ 20.