Complete application localization across all supported languages

README.md

@@ -209,6 +209,11 @@ Bug reports, focused pull requests, translations, documentation improvements, an
 - Use [Discussions](https://github.com/HakanSeven12/OpenCADStudio/discussions) for questions and ideas.
 - Report vulnerabilities privately by following the [security policy](SECURITY.md).
 
+Application translations live in `locales/*/opencadstudio.ftl`; source labels map through
+`src/locale_catalog.rs`. After editing translations, run `python3 scripts/export-locales.py`
+to refresh web and desktop packaging labels. Validate with `python3 scripts/test_site.py`
+and `cargo test --lib i18n::tests`.
+
 ## Project growth
 
 ### Stars