dsh-settings-nav-order: Long-Press Drag to Reorder Left-Side Main Items in the Settings Panel

The `dsh-settings-nav-order` plugin addresses the disordered sorting issue in the DeepSeek Harness settings panel, allowing users to customize the order by long-pressing and dragging top-level items. It supports persistence across restarts, accidental-touch protection, and clean uninstallation, without modifying shared configurations. After installation, restart `dsh`. To use it, long-press on the left side for 0.3 seconds and drag, and the changes will be saved automatically.