feat(playwright): 添加Cookie拦截示例和登录示例功能新增PlaywrightService服务，提供Cookie拦截与手动登录示例。新增DesktopApplication桌面应用入口，集成JavaFX界面。添加相关依赖：Playwright、JavaFX、Spring Boot等。

配置Maven插件支持JavaFX应用打包。
完善README文档，说明项目结构与运行方式。

src/main/java/com/fantaibao/DesktopApplication.java

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+package com.fantaibao;
+
+import com.fantaibao.service.PlaywrightService;
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.geometry.Insets;
+import javafx.scene.Scene;
+import javafx.scene.control.Button;
+import javafx.scene.control.TextArea;
+import javafx.scene.layout.VBox;
+import javafx.stage.Stage;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+
+//@SpringBootApplication
+public class DesktopApplication extends Application {
+
+    private TextArea textArea;
+    private ConfigurableApplicationContext applicationContext;
+    private PlaywrightService playwrightService;
+
+    public static void main(String[] args) {
+        // 设置JavaFX系统属性
+        System.setProperty("javafx.application.platform", "egl");
+        SpringApplication.run(DesktopApplication.class, args);
+        launch(args);
+    }
+
+    @Override
+    public void init() throws Exception {
+        super.init();
+        applicationContext = (ConfigurableApplicationContext) SpringApplication.run(DesktopApplication.class);
+        //playwrightService = applicationContext.getBean(PlaywrightService.class);
+        playwrightService = new PlaywrightService();
+    }
+
+    @Override
+    public void start(Stage primaryStage) {
+        primaryStage.setTitle("饭太煲爬虫桌面程序");
+
+        textArea = new TextArea();
+        textArea.setPrefRowCount(20);
+        textArea.setPrefColumnCount(50);
+        textArea.setEditable(false);
+
+        Button playwrightButton = new Button("运行Cookie拦截示例");
+        playwrightButton.setOnAction(e -> runPlaywrightCookieExample());
+
+        Button loginButton = new Button("运行登录示例");
+        loginButton.setOnAction(e -> runLoginExample());
+
+        VBox vBox = new VBox(10, playwrightButton, loginButton, textArea);
+        vBox.setPadding(new Insets(10));
+
+        Scene scene = new Scene(vBox, 800, 600);
+        primaryStage.setScene(scene);
+        primaryStage.setOnCloseRequest(e -> {
+            if (applicationContext != null) {
+                applicationContext.close();
+            }
+            Platform.exit();
+        });
+        primaryStage.show();
+    }
+
+    private void runPlaywrightCookieExample() {
+        appendText("开始运行Playwright Cookie拦截示例...\n");
+        Thread thread = new Thread(() -> 
+            playwrightService.interceptCookieExample(this::appendText)
+        );
+        thread.setDaemon(true);
+        thread.start();
+    }
+
+    private void runLoginExample() {
+        appendText("开始运行登录示例...\n");
+        Thread thread = new Thread(() -> 
+            playwrightService.loginExample(this::appendText)
+        );
+        thread.setDaemon(true);
+        thread.start();
+    }
+
+    private void appendText(String text) {
+        Platform.runLater(() -> textArea.appendText(text + "\n"));
+    }
+
+    @Override
+    public void stop() {
+        if (applicationContext != null) {
+            applicationContext.close();
+        }
+    }
+}