dsh-weather: Weather Query Plugin for DeepSeek Harness

dsh-weather is an MIT-licensed plugin for DeepSeek Harness (DSH), maintained by sunshine-lang. Built on the free Open-Meteo data source, it provides weather query capabilities for agents without requiring an API key or registration. The plugin offers a `get_weather` tool that supports querying real-time weather (temperature, apparent temperature, humidity, wind speed) for any location, as well as multi-day forecasts for up to 7 days, with the option to switch between Celsius and Fahrenheit units. Installation is performed by running the `dsh plugin add` command under the web profile. Users can trigger queries via natural language input in the web UI, with default configurations including a 10-second timeout and Celsius units. Local development requires Node.js version 22 or higher.