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cursor-byok/.agents/skills/i18n/SKILL.md
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2026-08-24 03:08:29 +08:00

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---
name: i18n
description: Implement and review Cursor BYOK desktop localization, including t() usage, locale catalogs, system-language selection, translation completeness, and language settings under apps/desktop.
---
# Desktop i18n
Keep localization organized as:
```text
apps/desktop/
├── plugins/static-i18n-plugin.ts
└── src/i18n/
├── I18nRoot.tsx
├── runtime.ts
├── store.ts
├── generated/catalog.json
└── locales/
├── zh-CN.json
└── en-US.json
```
## Author messages
- Use the global `t()` function with a static Simplified Chinese string literal: `t("保存")`.
- Do not import or locally declare `t`.
- Keep calls inside render paths when the result must update after a language change. Do not translate module-level UI constants.
- Use named placeholders with a static object: `t("第 {page} 页", { page })`.
- Preserve every placeholder name exactly in all translations.
- Wrap all user-visible labels, descriptions, tooltips, empty states, validation messages, and accessibility labels. Do not wrap protocol tokens, model IDs, URLs, or product names that should remain unchanged.
## Locale behavior
- `system` is the default preference.
- Resolve supported operating-system languages to their locale and fall back to `en-US` for every unsupported language.
- Persist only explicit locale selections. Removing the preference restores system-language behavior.
- Apply changes immediately and update the document `lang` attribute.
## Update catalogs
From `apps/desktop`:
1. Run `npm run i18n:scan` after adding or changing `t()` sources.
2. Translate every empty entry in `src/i18n/locales/en-US.json`.
3. Never edit `src/i18n/generated/catalog.json` or `zh-CN.json` manually; scanning owns them.
4. Run `npm run check`. A normal build must fail on a missing translation or mismatched placeholder.
When adding another locale, add it to the plugin's supported locales, runtime locale type and messages, locale resolver, settings options, and provide a complete locale JSON file.