dsh-log-volume: Log Volume Estimation Plugin

The `dsh-log-volume` plugin for DeepSeek Harness (DSH), maintained by uckkk, is designed to address unintuitive log context viewing and uncontrolled token consumption. It supports precise log volume calculation based on parameters and is implemented in pure Node.js, with no network dependencies. Installation is completed by running the `dsh plugin add github:uckkk/dsh-log-volume` command. Before use, ensure that the dependencies `@deepseek-ai/cordis` ^4.0.1 and `@deepseek-ai/dsh-tools` >=0.1.0-rc.6 are met, and review the source code and license to comply with security and compliance requirements.