feat(GlobalConfig): 添加抖音和美团平台的Logo图片资源在GlobalConfig类中新增了dyLogo和mtLogo两个Image类型的静态常量，用于存储抖音和美团平台的Logo图片资源，并在静态代码块中进行初始化。同时更新了PlatformSelectionView页面中的平台选项图片引用方式，

将原先使用的占位图URL替换为从GlobalConfig加载的实际Logo图片，并相应地修改了createPlatformMtOption与createPlatformDyOption方法签名，
使其接收Image对象而非字符串URL。

src/main/java/com/fantaibao/config/GlobalConfig.java

@@ -57,11 +57,15 @@ public class GlobalConfig {
 
     public static final Image icon16;
     public static final Image icon32;
+    public static final Image dyLogo;
+    public static final Image mtLogo;
 
     static {
         try {
             icon16 = new Image(new FileInputStream(ResourceUtils.getFile("classpath:icon16.png")));
             icon32 = new Image(new FileInputStream(ResourceUtils.getFile("classpath:icon32.png")));
+            dyLogo = new Image(new FileInputStream(ResourceUtils.getFile("classpath:dylogo.png")));
+            mtLogo = new Image(new FileInputStream(ResourceUtils.getFile("classpath:mtlogo.png")));
         } catch (FileNotFoundException e) {
             throw new RuntimeException(e);
         }

src/main/java/com/fantaibao/page/PlatformSelectionView.java

@@ -50,14 +50,14 @@ public class PlatformSelectionView {
         // 美团开店宝选项
         VBox meituanOption = createPlatformMtOption(
                 "美团开店宝",
-                "https://placehold.co/64x64?text=MT&bg=FFD700&fg=333",
+                GlobalConfig.mtLogo,
                 "#FFD700"
         );
 
         // 抖音来客选项
         VBox douyinOption = createPlatformDyOption(
                 "抖音来客",
-                "https://placehold.co/64x64?text=DY&bg=4A90E2&fg=FFF",
+                GlobalConfig.dyLogo,
                 "#4A90E2"
         );
 
@@ -72,14 +72,14 @@ public class PlatformSelectionView {
         primaryStage.show();
     }
 
-    private VBox createPlatformMtOption(String title, String imageUrl, String buttonColor) {
+    private VBox createPlatformMtOption(String title, Image imageUrl, String buttonColor) {
         VBox option = new VBox();
         option.setAlignment(Pos.CENTER);
         option.setSpacing(10);
         option.setPadding(new Insets(20));
         option.setStyle("-fx-background-color: white; -fx-border-radius: 8px; -fx-padding: 20px;");
 
-        ImageView imageView = new ImageView(new Image(imageUrl));
+        ImageView imageView = new ImageView(imageUrl);
         imageView.setFitWidth(64);
         imageView.setFitHeight(64);
 
@@ -102,14 +102,14 @@ public class PlatformSelectionView {
         return option;
     }
 
-    private VBox createPlatformDyOption(String title, String imageUrl, String buttonColor) {
+    private VBox createPlatformDyOption(String title, Image imageUrl, String buttonColor) {
         VBox option = new VBox();
         option.setAlignment(Pos.CENTER);
         option.setSpacing(10);
         option.setPadding(new Insets(20));
         option.setStyle("-fx-background-color: white; -fx-border-radius: 8px; -fx-padding: 20px;");
 
-        ImageView imageView = new ImageView(new Image(imageUrl));
+        ImageView imageView = new ImageView(imageUrl);
         imageView.setFitWidth(64);
         imageView.setFitHeight(64);