清理ColorPicker，进度条。修复UI问题

Melskin/Controls/ColorPicker/ColorPanel.xaml.cs

@@ -229,6 +229,8 @@ public class ColorPanel : Control
     {
         SelectPresetColorCommand = new RelayCommand(ExecuteSelectPresetColor);
         Loaded += OnPanelLoaded;
+        // 拦截面板内所有未处理的左键点击事件，防止穿透给其他控件（如DataGrid）导致焦点切换问题
+        this.MouseLeftButtonDown += (s, e) => e.Handled = true;
     }
 
     /// <summary>
@@ -317,8 +319,15 @@ public class ColorPanel : Control
         Debug.Assert(colorCanvas != null, nameof(colorCanvas) + " != null");
         if (colorCanvas == null) return;
         colorCanvas.CaptureMouse();
+        // 先解绑再绑定，防止重复点击时引发的多次订阅问题
+        colorCanvas.MouseMove -= ColorCanvas_MouseMove;
+        colorCanvas.MouseUp -= ColorCanvas_MouseUp;
+
         colorCanvas.MouseMove += ColorCanvas_MouseMove;
         colorCanvas.MouseUp += ColorCanvas_MouseUp;
+
+        // 标记事件为已处理，防止冒泡触发 DataGrid 的焦点切换
+        //e.Handled = true;
     }
 
     private void ColorCanvas_MouseUp(object sender, MouseButtonEventArgs e)
@@ -329,6 +338,7 @@ public class ColorPanel : Control
         colorCanvas.ReleaseMouseCapture();
         colorCanvas.MouseMove -= ColorCanvas_MouseMove;
         colorCanvas.MouseUp -= ColorCanvas_MouseUp;
+        //e.Handled = true;
     }
 
     private void ColorCanvas_MouseMove(object sender, MouseEventArgs e)