Codex-style custom instructions for DeepSeek Harness: edit ~/.dsh/AGENTS.md from a settings panel - applies to every chat and model. 类 Codex 自定义指令：在设置里编辑全局指令，所有会话所有模型生效。
Install dsh-custom-instructions
dsh plugin --profile web add github:lyke-61/dsh-custom-instructions