feat(gateway): 添加 transfer-service Kong 路由配置

在 kong.yml 和 kong-standalone.yml 中注册 transfer-service (端口 3013)：
- /api/v1/transfers → transfer-api（用户端转让操作）
- /api/v1/admin/transfers → transfer-admin-api（管理端）

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/api-gateway/kong-standalone.yml

@@ -226,6 +226,21 @@ services:
           - /api/v1/co-managed
         strip_path: false
 
+  # ---------------------------------------------------------------------------
+  # Transfer Service - 树转让服务
+  # ---------------------------------------------------------------------------
+  - name: transfer-service
+    url: http://192.168.1.111:3013
+    routes:
+      - name: transfer-api
+        paths:
+          - /api/v1/transfers
+        strip_path: false
+      - name: transfer-admin-api
+        paths:
+          - /api/v1/admin/transfers
+        strip_path: false
+
   # ===========================================================================
   # 2.0 Services → host.docker.internal (同一台物理机，通过宿主机端口)
   # ===========================================================================

backend/api-gateway/kong.yml

@@ -291,6 +291,21 @@ services:
           - /api/v1/co-managed
         strip_path: false
 
+  # ---------------------------------------------------------------------------
+  # Transfer Service - 树转让服务
+  # ---------------------------------------------------------------------------
+  - name: transfer-service
+    url: http://192.168.1.111:3013
+    routes:
+      - name: transfer-api
+        paths:
+          - /api/v1/transfers
+        strip_path: false
+      - name: transfer-admin-api
+        paths:
+          - /api/v1/admin/transfers
+        strip_path: false
+
 
   # ===========================================================================
   # RWA 2.0 Services - 新架构微服务