dsh-gemini-m3e-theme: A Gemini-Style Material 3 Theme for DeepSeek Harness

`dsh-gemini-m3e-theme` is a persistent client bundle plugin designed for DeepSeek Harness (DSH) to reskin the interface in Google Gemini's "luminous" style. Through official extension points, the theme provides comprehensive visual coverage, including 71 two-tone tokens, Google Sans typography, M3E shapes and motion, precise interactive ripples, and shadow design compatible with Windows scrollbars. Users can install, update, or uninstall it using the `dsh plugin` command; however, upstream CSS hash changes may invalidate the theme and require manual updates.