移除主窗口置顶功能

MainWindowViewModel.cs

@@ -26,7 +26,6 @@ namespace DrillTools
         private bool _canMoveUp;
         private bool _canMoveDown;
         private string _originalFilePath = string.Empty;
-        private bool _isTopmost = false; // 默认不顶置
         private string _fileNameWithoutExtension = string.Empty;
         private double _minDrillDiameter;
         private double _minSlotDiameter;
@@ -174,27 +173,6 @@ namespace DrillTools
             set => SetProperty(ref _shouldCheckSortFileOnLoad, value);
         }
 
-        /// <summary>
-        /// 窗口是否置顶
-        /// </summary>
-        public bool IsTopmost
-        {
-            get => _isTopmost;
-            set
-            {
-                if (SetProperty(ref _isTopmost, value))
-                {
-                    // 当IsTopmost改变时，通知TopmostButtonText属性也已更改
-                    OnPropertyChanged(nameof(TopmostButtonText));
-                }
-            }
-        }
-
-        /// <summary>
-        /// 置顶按钮显示文本
-        /// </summary>
-        public string TopmostButtonText => IsTopmost ? "取消置顶" : "窗口置顶";
-
         /// <summary>
         /// 文件名（不包含后缀）
         /// </summary>
@@ -1683,14 +1661,6 @@ M30";
             }
         }
 
-        /// <summary>
-        /// 切换窗口置顶状态
-        /// </summary>
-        public void ToggleTopmost()
-        {
-            IsTopmost = !IsTopmost;
-        }
-
         /// <summary>
         /// 更新最小直径信息
         /// </summary>