fix: 修复生成结果超时客户端无通知的问题

lib/browser/utils.js

@@ -405,3 +405,40 @@ export async function pasteImages(page, target, filePaths, options = {}) {
         throw e;
     }
 }
+
+/**
+ * 检查页面是否有效
+ * @param {import('playwright-core').Page} page
+ * @returns {boolean}
+ */
+export function isPageValid(page) {
+    try {
+        return page && !page.isClosed();
+    } catch {
+        return false;
+    }
+}
+
+/**
+ * 创建页面关闭/崩溃监听Promise
+ * @param {import('playwright-core').Page} page
+ * @returns {{promise: Promise, cleanup: Function}}
+ */
+export function createPageCloseWatcher(page) {
+    let closeHandler, crashHandler;
+
+    const promise = new Promise((_, reject) => {
+        closeHandler = () => reject(new Error('PAGE_CLOSED'));
+        crashHandler = () => reject(new Error('PAGE_CRASHED'));
+
+        page.once('close', closeHandler);
+        page.once('crash', crashHandler);
+    });
+
+    const cleanup = () => {
+        if (closeHandler) page.off('close', closeHandler);
+        if (crashHandler) page.off('crash', crashHandler);
+    };
+
+    return { promise, cleanup };
+}