fix: 增强导出下载诊断能力，缩短超时时间

下载超时从 300s 减至 120s，失败时自动保存截图、打印服务端响应内容、
检查页面错误提示和新标签页，便于定位 download 事件未触发的根因。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

automation/secsion.py

@@ -159,10 +159,11 @@ class SecsionDownloader:
 
         await asyncio.sleep(3)
 
-        # 如果配置了 shop_id，拦截导出请求注入 shop_id
-        if self.shop_id:
-            import json
+        # 如果配置了 shop_id，拦截导出请求注入 shop_id，并捕获服务端响应
+        import json
+        export_response = {'status': None, 'body': None, 'content_type': None}
 
+        if self.shop_id:
             async def inject_shop_id(route):
                 request = route.request
                 body = json.loads(request.post_data)
@@ -173,18 +174,92 @@ class SecsionDownloader:
             await page.route('**/api/bill/export', inject_shop_id)
             logger.info(f"已设置 shop_id 拦截: {self.shop_id}")
 
-        # 点击导出报表并捕获下载（Docker 中增加超时到300秒）
-        logger.info("点击导出报表...")
-        async with page.expect_download(timeout=300000) as download_info:
-            await export_btn.click()
-            logger.info("等待文件下载中...")
+        # 捕获导出接口的响应（用于调试）
+        async def on_response(response):
+            if '/api/bill/export' in response.url:
+                export_response['status'] = response.status
+                export_response['content_type'] = response.headers.get('content-type', '')
+                try:
+                    body = await response.text()
+                    export_response['body'] = body[:2000] if body else ''
+                except Exception:
+                    export_response['body'] = '(binary or empty)'
+                logger.info(f"导出接口响应: status={response.status}, content-type={export_response['content_type']}, body长度={len(export_response['body'] or '')}")
 
-        download = await download_info.value
-        filename = download.suggested_filename
-        save_path = os.path.join(self.download_dir, filename)
-        await download.save_as(save_path)
-        logger.info(f"报表已保存至: {save_path}")
-        return save_path
+        page.on("response", on_response)
+
+        # 点击导出报表并捕获下载
+        logger.info("点击导出报表...")
+        download_timeout = 120000  # 2 分钟
+
+        try:
+            async with page.expect_download(timeout=download_timeout) as download_info:
+                await export_btn.click()
+                logger.info("等待文件下载中...")
+
+            download = await download_info.value
+            filename = download.suggested_filename
+            save_path = os.path.join(self.download_dir, filename)
+            await download.save_as(save_path)
+            logger.info(f"报表已保存至: {save_path}")
+            return save_path
+
+        except Exception as download_err:
+            # 下载事件未触发，进行诊断
+            logger.warning(f"下载事件捕获失败: {download_err}")
+
+            # 保存调试截图
+            try:
+                screenshot_path = os.path.join(self.download_dir, f"debug_export_{datetime.now().strftime('%Y%m%d_%H%M%S')}.png")
+                await page.screenshot(path=screenshot_path, full_page=True)
+                logger.info(f"调试截图已保存: {screenshot_path}")
+            except Exception as ss_err:
+                logger.warning(f"截图保存失败: {ss_err}")
+
+            # 打印捕获到的响应信息
+            if export_response['status']:
+                logger.info(f"服务端实际响应: status={export_response['status']}, content-type={export_response['content_type']}")
+                if export_response['body']:
+                    logger.info(f"响应内容(前500字): {export_response['body'][:500]}")
+            else:
+                logger.warning("未捕获到 /api/bill/export 响应，可能是请求被拦截或未发出")
+
+            # 检查页面是否有错误提示
+            try:
+                error_text = await page.evaluate("""() => {
+                    const msgs = document.querySelectorAll('.t-message--error, .t-notification--error, [class*="error"], .el-message--error');
+                    return Array.from(msgs).map(el => el.textContent.trim()).filter(Boolean).join(' | ');
+                }""")
+                if error_text:
+                    logger.error(f"页面错误提示: {error_text}")
+            except Exception:
+                pass
+
+            # 检查是否有新打开的标签页（某些网站通过 window.open 下载）
+            try:
+                pages = page.context.pages
+                if len(pages) > 1:
+                    logger.info(f"检测到 {len(pages)} 个标签页，检查新标签页...")
+                    for p in pages[1:]:
+                        url = p.url
+                        logger.info(f"新标签页 URL: {url}")
+                        if url.startswith('blob:') or 'download' in url.lower() or 'export' in url.lower():
+                            # 尝试从新标签页下载
+                            try:
+                                async with p.expect_download(timeout=30000) as dl_info:
+                                    pass
+                                download = await dl_info.value
+                                filename = download.suggested_filename
+                                save_path = os.path.join(self.download_dir, filename)
+                                await download.save_as(save_path)
+                                logger.info(f"从新标签页下载成功: {save_path}")
+                                return save_path
+                            except Exception:
+                                pass
+            except Exception:
+                pass
+
+            raise
 
     async def _set_date(self, page, input_box, date_str):
         """