Internationalization

Rule

Visible framework/template UI copy belongs in the app's i18n catalog, not inline in components. When you add or edit UI text, update the English source catalog first, update existing locale catalogs, and run the i18n guard.

Catalogs

Templates use app/i18n/:

• en-US.ts is the canonical source tree and fallback.
• Other locale files keep the same non-plural keys and the same placeholders.
• index.ts exports an AgentNativeI18nCatalog with English bundled and non-English catalogs loaded by dynamic import.

Use BCP-47 filenames from the supported set: en-US, zh-CN, es-ES, fr-FR, de-DE, ja-JP, ko-KR, pt-BR, hi-IN, ar-SA.