dsh-multi-lang-ui

The DeepSeek Harness Web UI ships with only two interface languages — Simplified Chinese and English. For developers whose preferred locale is Traditional Chinese, Japanese, Korean, French, German, or Spanish, every screen is wall-to-wall text in a language they would rather not decode. dsh-multi-lang-ui plugs that gap: it registers six additional languages in the Settings → General → Language menu, each backed by 700+ hand-polished strings translated string-by-string from the English baseline rather than a raw machine pass.

What sets it apart is the three-layer fallback that keeps the UI intact as DSH evolves. New or changed upstream strings are caught on the fly — zh-TW converts Simplified to Traditional via a 720+ character lookup table, while the other five languages fall back to the complete English dictionaries. A MutationObserver additionally rewrites non-dictionary display content (such as plugin-market descriptions) in zh-TW mode, while always excluding inputs, code blocks, and other interactive elements. Language preference persists in localStorage, the plugin is a zero-dependency, zero-network, zero-telemetry client bundle, and no per-string re-translation is needed after upstream releases.

If you use DeepSeek Harness outside a Simplified-Chinese or English environment, or your team works across languages and everyone expects a native-language interface, this is a drop-in plugin: install it and the menu lights up, remove it and DSH starts exactly as before, with no upstream package touched in between.