dsh-deepseek-cost-live: DeepSeek Harness Real-Time Balance and Usage Estimation Plugin

`dsh-deepseek-cost-live` is an open-source community plugin developed for DeepSeek Harness (DSH) Web that monitors account balance and estimates today's spending. It fetches the balance via the official API and estimates consumption by parsing local session logs against a pricing table. The plugin displays information in three locations: below the input field, on a floating badge, and on the settings page, and supports Chinese-English bilingual display as well as rescanning history. Data is stored in a local JSON file, and the API key is resolved only within the host process. It requires Node.js >= 22.19.0, and spending figures are local estimates.