dsh-mcp-registry: A Governed Registry for MCP Connectors

`dsh-mcp-registry` is a DeepSeek Harness (DSH) plugin designed to address issues in MCP connector management such as unclear permissions and configuration failures. It provides a governed registry that supports persistent storage and atomic writes for stdio and streamable-http connectors, and implements a four-level fail-closed authorization mechanism (including a global toggle, tool-level authorization, and hard vetoes for destructive prompts). The plugin enforces strict import validation, redaction across all boundaries, and honest bridging, while refusing silent failures. It also supports native lazy loading of tools and CLI-based management commands. Installation requires modifying a DSH profile and is compatible with DSH 0.2.0 and the 0.1.7 line; reviewing the source code and license before installation is recommended.