dsh-pick: Pick Fields

`dsh-pick` is a plugin in DeepSeek Harness (DSH) for extracting specific fields, maintained by uckkk. It is implemented in pure Node.js, has no network dependencies, and is available under the MIT License. It can be installed via the official command and depends on specific versions of `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools`. It is suitable for data filtering scenarios; more details can be found in its GitHub repository.