fix: 修复添加项目后项目列表不刷新的问题

Co-authored-by: Cursor <cursoragent@cursor.com>

src/main/java/com/svnmanager/controller/MainController.java

@@ -12,6 +12,7 @@ import javafx.concurrent.Task;
 import javafx.fxml.FXML;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.control.*;
+import javafx.scene.control.ButtonBar.ButtonData;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.VBox;
 import javafx.scene.paint.Color;
@@ -266,7 +267,9 @@ public class MainController {
             dialog.setTitle("添加项目");
             
             dialog.showAndWait().ifPresent(result -> {
-                if (result == ButtonType.OK) {
+                // 这里的 ButtonType 来自 FXML，自定义的 "确定" 按钮并不等于 ButtonType.OK
+                // 需要通过 ButtonData 来判断是否为确认按钮
+                if (result != null && result.getButtonData() == ButtonData.OK_DONE) {
                     Project project = controller.getProject();
                     if (project != null) {
                         boolean saved = ConfigUtil.addProject(project);