dsh-nav-tidy: Hide sidebar entries without disabling the plugin

dsh-nav-tidy is a DSH client plugin maintained by AD199-gif. By utilizing the "Sidebar Entry" toggle in the More menu and the dshNavTidy console API, it hides sidebar panel entries based on aria-label substrings without uninstalling or disabling the underlying plugins. The hidden state is saved in the localStorage key `dsh-nav-tidy:hidden`. It is applicable to DSH Web/Desktop environments that feature the `sidebar.panellist.actions` slot; it performs visual hiding only and does not reduce plugin memory usage.