dsh-chatflow-rail: DSH Web Chat Conversation Flow Navigation and Quick Jump

`dsh-chatflow-rail` is a DSH Web client plugin maintained by veritas501, designed to address the inefficiency of scrolling through long conversations to find messages. **Core features:** The plugin provides a conversation-flow navigation bar on the left, mapping messages into dashed clusters. Hovering over an item expands it to reveal a message preview, and clicking enables smooth navigation. A "Previous Message" floating card is also available at the top for quick return. Additionally, the plugin automatically expands the history window to cover the entire conversation. **Installation and usage:** Because build scripts are blocked by `pnpm` by default, you first need to allow `dsh-chatflow-rail`'s build dependencies in `pnpm-workspace.yaml`, then install it with `dsh plugin add` and restart the service for the change to take effect. Applicability