dsh-niao-quick-open: A DeepSeek Harness Interface Enhancement Plugin

`dsh-niao-quick-open` is a plugin designed for the DeepSeek Harness (DSH) web interface, aiming to reduce the cost of switching between systems, file managers, editors, and sessions by centralizing frequently used operations. Its core features include one-click workspace opening (copying paths, revealing in the file manager, and opening in commonly used editors), as well as automatic scanning and listing of available editors on the host side. For session management, it provides a user message navigation bar that allows quick location of questions in long conversations, supporting hover-to-view summaries and click-to-jump; it also supports session todo markers and an enhanced three-row layout for the single-column view, optimizing interface information density. In addition, the plugin allows performing a "hard restart" directly within the page—after a double confirmation, it restarts the DSH service and automatically refreshes the page. Configuration options are centralized in the settings panel and take effect immediately or prompt for a restart, with data