DeepSeek Harness Input Experience Enhancement Plugin

`dsh-composer-ux` is an input-experience enhancement plugin for DeepSeek Harness Web, aimed at improving the interaction efficiency of frequent users. Core features include custom keybinding configuration and input method safety, three right-click menu modes, shortcuts, and a prompt optimizer. In addition, it offers auxiliary features such as a global toggle, persistent settings, a cost capsule display, OpenCode request header injection, and Windows terminal switching. Install it with `dsh plugin --profile web add dsh-composer-ux`.