feat: default locale Russian, geo determines language for other countries

- localization-svc: defaultLocale ru, resolveLocale only by geo
- web-svc: DEFAULT_LOCALE ru, layout lang=ru, embeddedTranslations fallback ru
- countryToLocale: default ru when no country or unknown country

Co-authored-by: Cursor <cursoragent@cursor.com>

CONTRIBUTING.md

@@ -59,17 +59,13 @@ GooSeek includes API documentation for programmatic access.
 
 ## Setting Up Your Environment
 
-Before diving into coding, setting up your local environment is key. Here's what you need to do:
+GooSeek развёртывается только через **Kubernetes** (встроенный в Docker Desktop, не Docker-контейнеры):
 
-1. Run `npm install` to install all dependencies.
-2. Use `npm run dev` to start the application in development mode.
-3. Open http://localhost:3000 and complete the setup in the UI (API keys, models, search backend URL, etc.).
+1. Запустите Docker Desktop, включите Kubernetes (Settings → Kubernetes).
+2. Выполните `./deploy/k3s/deploy.sh` из корня репозитория.
+3. Откройте приложение по URL из Ingress (https://gooseek.ru).
 
-Database migrations are applied automatically on startup.
-
-For full installation options (Docker and non Docker), see the installation guide in the repository README.
-
-**Please note**: Docker configurations are present for setting up production environments, whereas `npm run dev` is used for development purposes.
+Миграции БД выполняются автоматически при деплое. Конфигурация сервисов: `deploy/k3s/deploy.config.yaml`.
 
 ## Coding and Contribution Practices