dsh-unique: A Pure Node.js Array Deduplication Plugin

`dsh-unique` is a DeepSeek Harness workflow plugin maintained by uckkk, focused on providing efficient array deduplication. As a pure Node.js implementation, it does not rely on network requests, runs quickly, and is suitable for processing list data locally. After installation, its tool can be invoked directly within a session. The plugin depends on a specific version of the DeepSeek library, and because it involves code execution, it is recommended to review the source code and license before installing.