i18n

LobeHub internationalization with react-i18next. Use when adding any user-facing string in `.tsx`/`.ts` files, creating or renaming a key under `src/locales/default/{namespace}.ts`, deciding the `{feature}.{context}.{action}` flat-key pattern, wiring a new namespace into `src/locales/default/index.ts`, or translating zh-CN/en-US JSON for dev preview. Triggers on `useTranslation`, `t('foo.bar')`, `i18next.t`, `{{variable}}` interpolation, hardcoded UI strings (zh or en) that should be extracted, 'add i18n', '加 i18n key', '翻译', 'locale key', 'namespace', 'pnpm i18n'.