Translation to English Romanian and Polish language a Shopify store

Before starting translation remember what we spoke tis are the requirements: Website Translation & Localization Requirements 1. Add a language dropdown with 4 languages: Bulgarian, Romanian, English and Polish. 2. Each language must use a separate domain or subdomain, for example: * Bulgarian: my-thermo-smart.com * Romanian: ro.my-thermo-smart.com * English: en.my-thermo-smart.com * Polish: pl.my-thermo-smart.com 3. The website should automatically detect the visitor’s country/IP and redirect or suggest the correct domain and language. 4. Prices should support automatic currency conversion: * Bulgaria or all other countries beside Romania and Poland / EU: EUR * Romania: RON * Poland: PLN 5. The website should not be built as 4 separate websites. Content must be managed from one central place, so changes can be easily reused across all languages. 6. Videos must be configurable per language, so each translated version can use a different video if needed. 7. Product descriptions should be easy to update. If the Bulgarian description is changed, it should be easy to update/apply the corresponding translations for Romanian and Polish. 8. The solution should be easy to maintain, without duplicating the same pages and products manually for each country. Critical Requirement: The Bulgarian version is stable and serves as the baseline implementation. Do not change anything related to the Bulgarian version. No code, configuration, UI, translations, Any change that could impact the Bulgarian version is strictly prohibited due to regression risk. Expected result: Bulgarian version remains 100% unchanged.