dsh-conversation-navigator: DeepSeek Harness Web Conversation Navigation

`dsh-conversation-navigator` is a DeepSeek Harness (DSH) web plugin maintained by wang122818, designed to address the difficulty of locating context in long conversations. It adds a navigation bar on the left side of the chat interface, providing turn markers, viewport highlighting, hover previews, and click-to-jump navigation to help developers quickly browse and switch between conversation history. To install it, run `dsh plugin --profile web add D:\dsh-locateHistory` in the terminal and restart the process. The plugin supports mobile adaptation (hidden when the viewport width is below 900px) and handling of incomplete conversations, and is released under the MIT license.