DeepSeek Harness Web Visual Theme Switching Plugin: dsh-client-ui-theme-manager

`dsh-client-ui-theme-manager` is a client-side plugin for DeepSeek Harness Web, designed to solve the white-screen flickering and limited customization issues in the official theme-switching feature. By using persistent storage, it provides a zero-flicker theme-switching experience, includes 10 built-in preset themes, and supports creating, importing, exporting themes, and configuring background images. Installation methods include native commands or a one-click script, but you should avoid mixing them. Since data is stored locally, be mindful of compatibility after changing environments or upgrading DeepSeek.