dsh-feishu-mcp: Connecting DeepSeek Harness and Feishu via the Official MCP Server

`dsh-feishu-mcp` is the Feishu web plugin for DeepSeek Harness (DSH), integrated through the official MCP server without requiring a reverse proxy or public IP. The plugin runs the official server as a subprocess and registers tools as `mcp__feishu__*`. It supports app or user identity configuration and provides a web settings panel. The installation command is `dsh plugin --profile web add dsh-feishu-mcp`; note the required DSH version and Feishu app permission configuration.