dsh-plugin-crypto-ticker: Real-Time Cryptocurrency Ticker Card for DSH Sidebar

The DeepSeek Harness (DSH) plugin `dsh-plugin-crypto-ticker` is a zero-dependency, API-key-free sidebar tool for real-time cryptocurrency quotes. By default, it displays the prices, percentage changes, and mini trend charts of major tokens such as BTC and ETH, and supports red-for-gains/green-for-losses, price pulse feedback, multi-source data fallback (OKX → Binance → CoinGecko), and automatic adaptation to the Windows system proxy to ensure stable operation under domestic Chinese network conditions. Users can customize the token list and refresh frequency via configuration options. The plugin supports Web GUI display only and does not support a sidebar-less mode.