Refactor notification service and enhance user management features

- Replaced legacy payment notification functions with a new NotificationService for improved code organization and maintainability.
- Updated user management handlers to utilize the new notification system for payment confirmations.
- Enhanced user card formatting with localized labels for better clarity and user experience.
- Introduced context management for the PanelApiService to ensure proper session handling.
- Updated localization files to include new labels and messages for user management and notifications.

bot/handlers/user/payment.py

@@ -20,7 +20,7 @@ from bot.services.panel_api_service import PanelApiService
 from bot.services.yookassa_service import YooKassaService
 from bot.middlewares.i18n import JsonI18n
 from config.settings import Settings
-from bot.services.notification_service import notify_admin_new_payment, NotificationService
+from bot.services.notification_service import NotificationService
 from bot.keyboards.inline.user_keyboards import get_connect_and_main_keyboard
 
 payment_processing_lock = asyncio.Lock()
@@ -209,16 +209,6 @@ async def process_successful_payment(session: AsyncSession, bot: Bot,
             )
         except Exception as e:
             logging.error(f"Failed to send payment notification: {e}")
-        
-        # Legacy notification for backwards compatibility
-        await notify_admin_new_payment(
-            bot,
-            settings,
-            i18n,
-            user_id,
-            subscription_months,
-            payment_value,
-        )
 
     except Exception as e_process:
         logging.error(