DeepSeek Harness Plugin: dsh-control-plane

`dsh-control-plane` is a DSH plugin maintained by Harzva, designed to address the management challenges caused by multi-environment configuration confusion. It provides a local-first control plane that supports multiple runtime registration, session correlation, and web-based visualization. The plugin includes safety checks, pre-release validation, and extensible scenario adapters, with an additive integration design. Version v0.1.0 is currently released; developers should use isolated profiles to avoid installing local configurations into production environments.