feat: 监听browser连接断开,重新启动 browser

backend/src/main/java/pangea/hiagent/tool/playwright/PlaywrightManagerImpl.java

@@ -68,6 +68,7 @@ public class PlaywrightManagerImpl implements PlaywrightManager {
                         this.browser.onDisconnected((browser) -> {
                             log.info("浏览器实例已断开连接");
                             this.browser.close();
+                            userContexts.clear();
                             this.browser = playwright.chromium().launch(new BrowserType.LaunchOptions()
                                     .setHeadless(true)
                                     .setArgs(java.util.Arrays.asList(