- Updated the `UserSummaryDto` to include `BillingEnabled` and `BillingPaidUntil` properties, allowing for better tracking of user billing status. - Refactored the `IdentityService` to populate the new billing fields when retrieving user summaries. - Modified the dashboard and admin user management components to display billing information, including a link to the billing page and a badge for billing status. - Added internationalization support for new billing-related labels in both English and Russian. - Ensured frontend components reflect the updated user data structure, enhancing user experience with billing visibility.