uckkk/dsh-chicago-city: DeepSeek Harness Chicago City Plugin

The DeepSeek Harness (DSH) plugin `dsh-chicago-city`, maintained by developer `uckkk`, is designed to provide localized Chicago city data querying capabilities within the DSH environment. It is implemented entirely in Node, requires no network connection at runtime, and registers the `city_info` tool for invocation. The installation command is `dsh plugin add github:uckkk/dsh-chicago-city`, and it requires the dependencies `@deepseek-ai/cordis` (>=4.0.1) and `@deepseek-ai/dsh-tools` (>=0.1.0-rc.6). The plugin runs with DSH process privileges; it is recommended to review the source code before installation to ensure security.