DSH Session Pins: Providing Persistent Pinned Session Menus for DeepSeek Harness

The DSH plugin `dsh-session-pins` developed by alooshxl aims to solve the difficulty of finding frequently used sessions in the DeepSeek Harness Web sidebar. This plugin is based on the MIT license and integrates through the public `sidebar.footer.action` slot, without relying on private UI source code or patching the host. Its core functionality provides a pinned sessions menu at the bottom of the sidebar, supporting the pinning of regular, non-empty sessions, with data stored in the browser's local `localStorage`, requiring no API key. The plugin features a robust validation mechanism, limiting the maximum number of pinned items to 100, and synchronizes across same-origin tabs via the `storage` event. Installation requires the `dsh plugin` command to add a specified Git tag.