dsh-user-language

English | 简体中文

DeepSeek Harness (DSH) response-language plugin: adds a "User language" section in the Web settings page, and injects a directive into the assembled system prompt so the model answers in the configured language. Solves "user asks in Chinese but the model replies in English".

> Part of the dsh-plugins collection — > see that repository for the full index of self-built plugins.

Contents

• index.js (host side): registers the user-language settings namespace

(a language field) and a systemPrompt section (user:language, order -90). The section text evaluates the current language from settings on each assembly; when no language is configured it renders empty and is skipped.

• client.js (browser side): renders the "User language" section in the

settings page, editing language.

• cordis.patch.yml: declares the dsh-user-language plugin row.
• package.json: the @doiiarx/dsh-user-language package manifest, declaring the

dsh.client inject set and the schemastery dependency.

Install & wiring

Install dependencies in this plugin directory (the host half runs import('schemastery') in index.js):

cd <this plugin directory>
pnpm install

1. Mount into the web profile

In $HOME/.dsh/profiles/web/package.json:

{
  "dependencies": {
    "@doiiarx/dsh-user-language": "link:<absolute path to this plugin directory>"
  },
  "dsh": {
    "profile": {
      "bundles": [
        "@doiiarx/dsh-user-language"
      ]
    }
  }
}

Then run pnpm install in that profile directory.

2. Expose the namespace to the browser settings page

The browser settings page can only read the user-language namespace if it is listed in the host apiproxy settings allowlist WEB_SETTINGS_NAMESPACES (packages/host/apiproxy/src/api-proxy.ts); otherwise the settings page keeps showing "正在读取配置…" (the namespace is not exposed to the client).

const WEB_SETTINGS_NAMESPACES = [
  'agent-loop', 'shell', 'locale', 'permission', 'ui-conversation', 'ui-theme', 'web-search-deepseek',
  // ...local-plugin namespaces...
  'user-language',
] as const

Then rebuild the apiproxy (pnpm run build:lib:host) and restart the web process.

Effect

The default response language is Simplified Chinese. Every new session's system prompt includes something like:

> Always reply to the user entirely in the configured language — every reply, > explanation, and post-tool-call note. Respond in: Simplified Chinese > (简体中文). Never switch your reply prose to English just because the user > occasionally uses English, code, or terms.

In the settings page's "User language" section you can change language to something else (e.g. English / 日本語); the next reply switches after saving.

Notes

• The system prompt itself is not shown in the conversation UI; "I don't see

the language paragraph in the chat" does not mean it is not injected.

• client.js follows the usual DSH @doiiarx/ plugin browser loading pattern

(window.__ModuleLoader__.load + the settings.section slot), paired with the host-side settings namespace.