dsh-caesium: Caesium Element

dsh-caesium is a pure Node plugin for DeepSeek Harness (DSH). Its core value is **no network dependency**, making it suitable for offline environments or scenarios without network overhead. The plugin is maintained by uckkk and requires `@deepseek-ai/cordis` (>= 4.0.1) and `@deepseek-ai/dsh-tools` (>= 0.1.0-rc.6). The installation command is `dsh plugin add github:uckkk/dsh-caesium`. It is recommended to review the source code to confirm its security and license before use.