chore: 修改 TDengine JDBC URL 为 127.0.0.1:6031

- application.yml: localhost → 127.0.0.1 避免 IPv6 解析问题
- IotProperties.java: 同步修改默认 URL

iot-platform/src/main/java/com/iot/platform/config/IotProperties.java

      * TDengine配置
      */
     public static class TDengine {
-        private String url = "jdbc:TAOS://localhost:6031/";
+        private String url = "jdbc:TAOS://127.0.0.1:6031/";
         private String username = "";
         private String password = "";
 

iot-platform/src/main/resources/application.yml

     password: ${MQTT_PASSWORD:}
     charge-station-topic: ${MQTT_CHARGE_STATION_TOPIC:station/ChargeStation/device/+/post/json}
   tdengine:
-    url: jdbc:TAOS://localhost:6031/
+    url: jdbc:TAOS://127.0.0.1:6031/
     username: ${TDENGINE_USERNAME:}
     password: ${TDENGINE_PASSWORD:}