fix: add missing payment providers to payment_utils and fix {total_amount} formatting

- Add freekassa, cloudpayments, kassa_ai to get_available_payment_methods(),
  is_payment_method_available(), get_payment_method_status(), and
  get_enabled_payment_methods_count()
- Fix cart reminder message showing literal {total_amount} in platega,
  stars, mulenpay, wata by adding .format() call

app/services/payment/mulenpay.py

@@ -380,7 +380,7 @@ class MulenPayPaymentMixin:
                             'BALANCE_TOPUP_CART_REMINDER_DETAILED',
                             '🛒 У вас есть неоформленный заказ.\n\n'
                             'Вы можете продолжить оформление с теми же параметрами.',
-                        )
+                        ).format(total_amount=settings.format_price(payment.amount_kopeks))
 
                         # Создаем клавиатуру с кнопками
                         keyboard = types.InlineKeyboardMarkup(

app/services/payment/platega.py

@@ -471,7 +471,7 @@ class PlategaPaymentMixin:
                 cart_message = texts.t(
                     'BALANCE_TOPUP_CART_REMINDER_DETAILED',
                     '🛒 У вас есть неоформленный заказ.\n\nВы можете продолжить оформление с теми же параметрами.',
-                )
+                ).format(total_amount=settings.format_price(payment.amount_kopeks))
 
                 keyboard = types.InlineKeyboardMarkup(
                     inline_keyboard=[

app/services/payment/stars.py

@@ -495,7 +495,7 @@ class TelegramStarsMixin:
                 cart_message = texts.t(
                     'BALANCE_TOPUP_CART_REMINDER_DETAILED',
                     '🛒 У вас есть неоформленный заказ.\n\nВы можете продолжить оформление с теми же параметрами.',
-                )
+                ).format(total_amount=settings.format_price(amount_kopeks))
 
                 keyboard = types.InlineKeyboardMarkup(
                     inline_keyboard=[

app/services/payment/wata.py

@@ -561,7 +561,7 @@ class WataPaymentMixin:
                 cart_message = texts.t(
                     'BALANCE_TOPUP_CART_REMINDER_DETAILED',
                     '🛒 У вас есть неоформленный заказ.\n\nВы можете продолжить оформление с теми же параметрами.',
-                )
+                ).format(total_amount=settings.format_price(payment.amount_kopeks))
 
                 keyboard = types.InlineKeyboardMarkup(
                     inline_keyboard=[

app/utils/payment_utils.py

@@ -114,6 +114,42 @@ def get_available_payment_methods() -> list[dict[str, str]]:
             }
         )
 
+    if settings.is_cloudpayments_enabled():
+        cloudpayments_name = settings.get_cloudpayments_display_name()
+        methods.append(
+            {
+                'id': 'cloudpayments',
+                'name': 'Банковская карта',
+                'icon': '💳',
+                'description': f'через {cloudpayments_name}',
+                'callback': 'topup_cloudpayments',
+            }
+        )
+
+    if settings.is_freekassa_enabled():
+        freekassa_name = settings.get_freekassa_display_name()
+        methods.append(
+            {
+                'id': 'freekassa',
+                'name': freekassa_name,
+                'icon': '💳',
+                'description': f'через {freekassa_name}',
+                'callback': 'topup_freekassa',
+            }
+        )
+
+    if settings.is_kassa_ai_enabled():
+        kassa_ai_name = settings.get_kassa_ai_display_name()
+        methods.append(
+            {
+                'id': 'kassa_ai',
+                'name': kassa_ai_name,
+                'icon': '💳',
+                'description': f'через {kassa_ai_name}',
+                'callback': 'topup_kassa_ai',
+            }
+        )
+
     if settings.is_support_topup_enabled():
         methods.append(
             {
@@ -225,6 +261,12 @@ def is_payment_method_available(method_id: str) -> bool:
         return settings.is_heleket_enabled()
     if method_id == 'platega':
         return settings.is_platega_enabled() and bool(settings.get_platega_active_methods())
+    if method_id == 'cloudpayments':
+        return settings.is_cloudpayments_enabled()
+    if method_id == 'freekassa':
+        return settings.is_freekassa_enabled()
+    if method_id == 'kassa_ai':
+        return settings.is_kassa_ai_enabled()
     if method_id == 'support':
         return settings.is_support_topup_enabled()
     return False
@@ -244,6 +286,9 @@ def get_payment_method_status() -> dict[str, bool]:
         'cryptobot': settings.is_cryptobot_enabled(),
         'heleket': settings.is_heleket_enabled(),
         'platega': settings.is_platega_enabled() and bool(settings.get_platega_active_methods()),
+        'cloudpayments': settings.is_cloudpayments_enabled(),
+        'freekassa': settings.is_freekassa_enabled(),
+        'kassa_ai': settings.is_kassa_ai_enabled(),
         'support': settings.is_support_topup_enabled(),
     }
 
@@ -271,4 +316,10 @@ def get_enabled_payment_methods_count() -> int:
         count += 1
     if settings.is_platega_enabled() and settings.get_platega_active_methods():
         count += 1
+    if settings.is_cloudpayments_enabled():
+        count += 1
+    if settings.is_freekassa_enabled():
+        count += 1
+    if settings.is_kassa_ai_enabled():
+        count += 1
     return count