DeepSeek Harness Plugin: dsh-uvm

`dsh-uvm` is a DSH client plugin maintained by Harzva, designed to manage Python virtual environments directly through the DSH web interface. It integrates full lifecycle management with `uv`, supporting environment creation and deletion, package installation, and command execution, and provides a `pip` fallback as well as read-only viewing of `conda` environments. The plugin offers capabilities such as project synchronization and dependency diff preview (M2), while strictly enforcing security restrictions: all operations are limited to the designated local directory, ensuring data privacy and system security. Users can install and use it with the official command.