feat: 优化发货凭证与字段兼容，隐藏内部积分展示并增强DLC角色解析

backend/internal/router/router.go

@@ -113,6 +113,7 @@ func Setup(h *Handlers) *gin.Engine {
 			delivery.POST("/orders/:order_no/bind", h.Delivery.Bind)
 			delivery.POST("/orders/:order_no/submit", h.Delivery.Submit)
 			delivery.GET("/image-proxy", h.Delivery.ImageProxy)
+			delivery.HEAD("/image-proxy", h.Delivery.ImageProxy)
 		}
 
 		// 源头侧接口：上游发货平台查询订单并回传发货结果。

backend/internal/service/fulfillment_data.go

@@ -138,12 +138,16 @@ func extractGameFields(raw string, out *OpenOrderQuery) {
 		}
 	}
 	if out.GameUID == "" {
-		if v, ok := m["game_uid"].(string); ok {
+		if v, ok := m["game_uid"].(string); ok && v != "" {
+			out.GameUID = v
+		} else if v, ok := m["game_account"].(string); ok && v != "" {
 			out.GameUID = v
 		}
 	}
 	if out.RoleName == "" {
-		if v, ok := m["role_name"].(string); ok {
+		if v, ok := m["role_name"].(string); ok && v != "" {
+			out.RoleName = v
+		} else if v, ok := m["game_account_role_name"].(string); ok && v != "" {
 			out.RoleName = v
 		}
 	}