dsh-altitude-sick: Altitude Sickness Prevention

`dsh-altitude-sick` is a plugin-based tool for DeepSeek Harness (DSH) targeting outdoor trekking scenarios, maintained by uckkk. The plugin is implemented purely in Node.js, has no network dependencies, and focuses on providing altitude sickness prevention advice and returning trekking/mountaineering plans based on provided parameters. Developers need to install dependencies such as `@deepseek-ai/cordis`, add the plugin via command, and then invoke it in a session, aiming to help agents enhance outdoor planning capabilities.