fix: stabilize production payment flow

apps/portal/views.py

@@ -8,7 +8,7 @@ from django.views import View
 from django.views.generic import FormView, TemplateView
 
 from apps.ai.catalog import get_public_model_catalog
-from apps.billing.payment_gateways import PaymentOrderCreateError
+from apps.billing.payment_gateways import PaymentOrderCreateError, payment_callback_mode
 from apps.billing.pricing import NoExchangeRateError
 from apps.billing.models import PointsLedger, RechargeOrder
 from apps.billing.services import (
@@ -164,7 +164,10 @@ class RechargePageView(LoginRequiredMixin, FormView):
             ).first()
         context["balance"] = get_balance_snapshot(self.request.user)
         context.update(get_portal_account_summary(self.request.user))
+        current_payment_mode = payment_callback_mode()
         context["current_order"] = current_order
+        context["payment_callback_mode"] = current_payment_mode
+        context["is_mock_payment_mode"] = current_payment_mode == "mock"
         context["recent_recharge_orders"] = get_recharge_orders_for_user(
             self.request.user
         )[:5]