dsh-pest-plan: Pest and Disease Diagnosis and Plant Care Plan

`dsh-pest-plan` is a plugin in the DeepSeek Harness ecosystem designed specifically for local plant health diagnosis. Maintained by uckkk and implemented in a pure Node environment, it can run without internet access, diagnose pests and diseases based on input parameters, and provide care plans. Users can install it via CLI commands and invoke its registered tools in a session. The plugin is released under the MIT license, making it suitable for offline environments and scenarios that require offline operation.