dsh-nuphus-mcp: Mount nuphus-mcp's computer-use tools in DSH

dsh-nuphus-mcp is an MIT-licensed DSH plugin maintained by mrpulor-gh, designed to mount nuphus-mcp as a native DSH tool, enabling Agents in the web profile to possess desktop or computer usage capabilities. The plugin registers 38 tools prefixed with `mcp__nuphus-mcp__*`, automatically installing missing dependencies upon first startup. It also enables the `--confirm-write` security mechanism by default, requiring the `confirm: true` parameter for write operations. It supports configuring parameters such as `serverName`, `command`, and timeout via `NUPHUS_MCP_*` environment variables and `cordis.yml`. The installation command is `npx -p @deepseek-ai/ds`.