dsh-spend-plus: DeepSeek Harness Plugin (Usage/Cost Dashboard + Balance Query)

`dsh-spend-plus` is a DeepSeek Harness plugin maintained by hanjf12. It combines token usage tracking, cost estimation, and official account balance lookup into an all-in-one monitoring solution. The plugin supports a floating window in the bottom-right corner that displays usage and estimated costs (with peak/off-peak pricing support), and below the input box it shows the account balance (in CNY) and the cost of the current session (with peak/off-peak period support). The installation command is `dsh plugin --profile web add git+https://github.com/hanjf12/dsh-spend-plus.git`.