dsh-reading-light: Return Home Lighting Design Schemes Based on Parameters

This plugin is a Node.js client plugin maintained by uckkk, designed to provide home lighting design solutions for DeepSeek Harness (DSH)-based agents. It requires no network dependencies and registers a `reading_light` tool to allow users to quickly obtain lighting configuration solutions. Developers can install it using the `dsh plugin add` command, after which the tool becomes available in the current session. The plugin runs under DSH process permissions; it is recommended to review the source code and MIT license before use.