dsh-deepseek-monitor: DeepSeek Balance and Usage Monitoring

dsh-deepseek-monitor is a web plugin for DeepSeek Harness, designed to address the issue of users being unable to view their balance and token consumption intuitively. The plugin integrates a settings card and an input box toolbar, providing real-time balance display, an account details panel (including cost and model usage charts), and token configuration features. It follows security principles: data is validated through API liveness checks and processed locally, and API keys are neither displayed on screen nor stored, making it suitable for developers who require fine-grained cost control.