dsh-golden-ratio: Golden Ratio Calculator

`dsh-golden-ratio` is a local golden-ratio calculation plugin for DeepSeek Harness. Maintained by uckkk, this plugin is implemented in pure Node.js and performs calculations without network requests, preserving privacy and improving performance. After installation, it must be enabled in the profile's `package.json`. It requires `@deepseek-ai/cordis` (^4.0.1) and `@deepseek-ai/dsh-tools` (>=0.1.0-rc.6) as dependencies, so please review the source code and MIT license before installing.