DeepSeek Harness Plugin: Real-Time Display of DeepSeek Account Balance with Official Top-Up Support

`dsh-deepseek-balance` is a static plugin designed for DeepSeek Harness (DSH) that addresses the inconvenience of checking account balances. By calling the official API, it displays real-time account balances (including multiple currencies) in the DSH interface and provides a top-up entry point. The plugin supports automatic refresh every 60 seconds, adaptive light and dark themes, and includes security mechanisms by ensuring API keys are used only within local processes and never sent over the network. Users can install it via npm, and it retrieves the API Key in priority order from memory, environment variables, or a credential store. This tool allows developers to manage their accounts without frequently switching between web pages, improving the development experience.