dsh-sidebar-frog: Offline Preview and Sidebar Extension for DeepSeek Harness

dsh-sidebar-frog is an unofficial community plugin for DeepSeek Harness, designed to address the limitation of viewing files generated during operation. It provides sidebar and browser tab functionality, supports offline previews of multiple formats such as code, documents, and multimedia, and allows the sidebar to be dragged to a second display for multi-monitor use. Additionally, it supports file references, change tracking, CodeMirror editing, and permission control. The plugin has zero dependencies and makes no network requests, making it fully usable offline and suitable for intranet environments and multitasking scenarios.