fix(public/subscribe): 添加调试打印以跟踪订阅列表处理

添加fmt.Println语句以调试订阅列表处理过程中的item和sub变量，帮助定位潜在问题

internal/logic/public/subscribe/querySubscribeListLogic.go

@@ -3,6 +3,7 @@ package subscribe
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 
 	"github.com/perfect-panel/server/internal/model/subscribe"
 	"github.com/perfect-panel/server/internal/svc"
@@ -55,6 +56,8 @@ func (l *QuerySubscribeListLogic) QuerySubscribeList(req *types.QuerySubscribeLi
 			sub.Discount = discount
 			list[i] = sub
 		}
+		fmt.Println(item)
+		fmt.Println(sub)
 		list[i] = sub
 	}
 	resp.List = list