Merge branch 'refactor/backend-architecture' into development

api/app/features/payment/service.py

@@ -0,0 +1,13 @@
+"""
+支付 feature 对外暴露：统一门面与配置（实现已迁入 app）
+"""
+from app.features.payment.payment_config import PaymentConfig
+from app.features.payment.payment_facade import PaymentService
+from app.features.payment.payment_exceptions import PaymentConfigError, PaymentError
+
+__all__ = [
+    "PaymentService",
+    "PaymentConfig",
+    "PaymentError",
+    "PaymentConfigError",
+]