feat(topup): add admin-only audit info to top-up logs

Thread caller IP from webhook/admin controllers through model recharge
functions and record a new RecordTopupLog entry with admin_info (server
IP, caller IP, order payment method, callback payment method, system
version). Frontend shows these fields in the expanded log row and the
IP column for admins on top-up logs, while non-admins continue to see
admin_info stripped by formatUserLogs.

model/log.go

@@ -90,6 +90,33 @@ func RecordLog(userId int, logType int, content string) {
 	}
 }
 
+func RecordTopupLog(userId int, content string, callerIp string, paymentMethod string, callbackPaymentMethod string) {
+	username, _ := GetUsernameById(userId, false)
+	adminInfo := map[string]interface{}{
+		"server_ip":               common.GetIp(),
+		"caller_ip":               callerIp,
+		"payment_method":          paymentMethod,
+		"callback_payment_method": callbackPaymentMethod,
+		"version":                 common.Version,
+	}
+	other := map[string]interface{}{
+		"admin_info": adminInfo,
+	}
+	log := &Log{
+		UserId:    userId,
+		Username:  username,
+		CreatedAt: common.GetTimestamp(),
+		Type:      LogTypeTopup,
+		Content:   content,
+		Ip:        callerIp,
+		Other:     common.MapToJsonStr(other),
+	}
+	err := LOG_DB.Create(log).Error
+	if err != nil {
+		common.SysLog("failed to record topup log: " + err.Error())
+	}
+}
+
 func RecordErrorLog(c *gin.Context, userId int, channelId int, modelName string, tokenName string, content string, tokenId int, useTimeSeconds int,
 	isStream bool, group string, other map[string]interface{}) {
 	logger.LogInfo(c, fmt.Sprintf("record error log: userId=%d, channelId=%d, modelName=%s, tokenName=%s, content=%s", userId, channelId, modelName, tokenName, content))