Add inline switchable emojis to DeepSeek Harness's replies using dsh-emoji

### 译文（专业技术文档译法）： dsh-emoji is a fun plugin for DeepSeek Harness maintained by hellodigua. It uses semantic markers like `::happy::` to convert AI responses into inline emoji images on the Host side. It has 40 built-in blue whale emojis, supports adjusting size and usage frequency, and also allows uploading custom ZIP packages following the `dsh-emoji-core@1` contract. This article verifies the installation commands, working mechanism and limitations by cross-checking with the directory page and GitHub repository.