feat: 技术债务清理（支付配置动态化、API文档补全、轮询常量提取、废弃代码清理）

pkg/errors/codes.go

@@ -65,7 +65,6 @@ const (
 	CodeWithdrawalNotFound  = 1052 // 提现申请不存在
 	CodeWalletNotFound      = 1053 // 钱包不存在
 	CodeInsufficientQuota   = 1054 // 额度不足
-	CodeExceedLimit         = 1055 // 超过限制
 
 	// IoT 卡相关错误 (1070-1089)
 	CodeIotCardNotFound                   = 1070 // IoT 卡不存在
@@ -224,7 +223,6 @@ var allErrorCodes = []int{
 	CodeWithdrawalNotFound,
 	CodeWalletNotFound,
 	CodeInsufficientQuota,
-	CodeExceedLimit,
 	CodeIotCardNotFound,
 	CodeIotCardBoundToDevice,
 	CodeIotCardStatusNotAllowed,
@@ -356,7 +354,6 @@ var errorMessages = map[int]string{
 	CodeWithdrawalNotFound:                "提现申请不存在",
 	CodeWalletNotFound:                    "钱包不存在",
 	CodeInsufficientQuota:                 "额度不足",
-	CodeExceedLimit:                       "超过限制",
 	CodeIotCardNotFound:                   "IoT 卡不存在",
 	CodeIotCardBoundToDevice:              "IoT 卡已绑定设备，不能单独操作",
 	CodeIotCardStatusNotAllowed:           "卡状态不允许此操作",