调整初始面板分布，图片区域占比更大

src/main/java/org/example/ImageDotMarker.java

@@ -122,8 +122,9 @@ public class ImageDotMarker extends JFrame {
 
     private void createMainPanel() {
         JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
-        splitPane.setDividerLocation(300);
-        splitPane.setResizeWeight(0.7);
+        // 调整splitPane参数，让左侧图片面板占用更多空间
+        splitPane.setDividerLocation(950);
+        splitPane.setResizeWeight(0.2);
 
         // 左侧图片面板
         JPanel imagePanel = new JPanel(new BorderLayout());
@@ -195,7 +196,8 @@ public class ImageDotMarker extends JFrame {
         });
 
         JScrollPane listScrollPane = new JScrollPane(pointList);
-        listScrollPane.setPreferredSize(new Dimension(280, 400));
+        // 减小列表滚动面板的首选高度
+        listScrollPane.setPreferredSize(new Dimension(250, 250));
 
         // 点操作按钮
         JPanel buttonPanel = new JPanel(new GridLayout(1, 3, 5, 5));