DeepSeek Harness Plugin: relay-dsh-plugin-monitor-author

The `relay-dsh-plugin-monitor-author` plugin for DeepSeek Harness (DSH) introduces the `relay-monitor-author` Skill to guide Agents in securely discovering and creating Relay Monitor Bundles. It follows the principle of least privilege, provides verification and installation mechanisms, and supports invocation via natural language, UI tools, and commands. Installation requires a corresponding version and a Node.js >= 22.13 runtime. Uninstalling the plugin removes the Skill but does not affect existing Monitor Core configurations.