fixes

backend/igny8_core/modules/billing/urls.py

@@ -3,7 +3,13 @@ URL patterns for billing module
 """
 from django.urls import path, include
 from rest_framework.routers import DefaultRouter
-from .views import CreditBalanceViewSet, CreditUsageViewSet, CreditTransactionViewSet
+from .views import (
+    CreditBalanceViewSet, 
+    CreditUsageViewSet, 
+    CreditTransactionViewSet,
+    BillingOverviewViewSet,
+    AdminBillingViewSet
+)
 
 router = DefaultRouter()
 router.register(r'credits/balance', CreditBalanceViewSet, basename='credit-balance')
@@ -12,5 +18,13 @@ router.register(r'credits/transactions', CreditTransactionViewSet, basename='cre
 
 urlpatterns = [
     path('', include(router.urls)),
+    # User-facing billing overview
+    path('account_balance/', BillingOverviewViewSet.as_view({'get': 'account_balance'}), name='account-balance'),
+    path('transactions/', CreditTransactionViewSet.as_view({'get': 'list'}), name='transactions'),
+    path('usage/', CreditUsageViewSet.as_view({'get': 'list'}), name='usage'),
+    # Admin billing endpoints
+    path('admin/billing/stats/', AdminBillingViewSet.as_view({'get': 'stats'}), name='admin-billing-stats'),
+    path('admin/users/', AdminBillingViewSet.as_view({'get': 'list_users'}), name='admin-users-list'),
+    path('admin/credit-costs/', AdminBillingViewSet.as_view({'get': 'credit_costs'}), name='admin-credit-costs'),
 ]