fix ledger update

LFtid1056/cloudfront/code/cfg_parser.cpp

@@ -5119,11 +5119,17 @@ void enqueue_realtime_pq(const RealtagPqDate_float& realdata,
         std::lock_guard<std::mutex> lk(g_last_ts_mtx);
         auto it = g_last_ts_by_devid.find(devid);
         if (it != g_last_ts_by_devid.end() && it->second == data_time) {
+
+            std::cout << "[enqueue_realtime_pq] duplicate timestamp, devid="
+                      << devid << " time=" << data_time << std::endl;
             // 同一设备与上次时间相同 → 丢弃本次
             return;
         }
         // 记录本次时间
         g_last_ts_by_devid[devid] = data_time;
+
+        std::cout << "[enqueue_realtime_pq] record timestamp, devid="
+                  << devid << " time=" << data_time << std::endl;
     }
 
     std::vector<DataArrayItem> arr;