fix: 恢复默认设置仅重置 PLC 连接参数（IP/端口）

src/YZWater.Core/ViewModels/ViewBViewModel.cs

@@ -233,19 +233,15 @@ public partial class ViewBViewModel : TranslatableViewModelBase
     }
 
     /// <summary>
-    /// 恢复默认设置
+    /// 恢复默认设置（仅恢复 PLC 连接参数）
     /// </summary>
     [RelayCommand]
     private void ResetToDefault()
     {
-        PlcIp = "192.168.0.150";
-        PlcPort = 5000;
-        AutoConnect = true;
-        LevelHighAlarm = 80f;
-        LevelLowAlarm = 20f;
-        FlowHighAlarm = 100f;
+        PlcIp = "192.168.2.100";
+        PlcPort = 102;
 
-        Log.Information("已恢复默认设置");
+        Log.Information("已恢复默认 PLC 连接参数: IP={PlcIp}, Port={PlcPort}", PlcIp, PlcPort);
     }
 
     public new void Dispose()