DSH Plugin: dsh-r-ide (Integrated Four-Pane R IDE)

`dsh-r-ide` is an R IDE integration plugin for DeepSeek Harness. It exists as a tab within `dsh-better-sidebar` and provides an independent R process for each conversation session. The plugin supports a four-pane layout and integrates code editing, console, environment, and plotting features, aiming to address the pain points of integrated R development in the DSH environment. Users need to install it via the community directory or GitHub, and should pay attention to its dependencies and permission-related security.