修复bug和清理调试代码

1. email_service.py: 删除未定义的log_email_send调用（send_email内部已记录日志）
2. app.py: 删除[DEBUG run_task]调试打印语句
3. playwright_automation.py: 删除[调试]诊断日志块

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

playwright_automation.py

@@ -802,20 +802,6 @@ class PlaywrightAutomation:
 
                 if rows_count == 0:
                     self.log("当前页面没有内容")
-                    # 调试：输出页面信息帮助诊断
-                    try:
-                        page_html = self.page.content()
-                        if 'ltable' in page_html:
-                            self.log(f"[调试] 表格存在，但没有数据行")
-                            # 检查是否有"暂无记录"提示
-                            if '暂无' in page_html or '没有' in page_html:
-                                self.log(f"[调试] 页面显示暂无记录")
-                        else:
-                            self.log(f"[调试] 页面中没有找到ltable表格")
-                        # 检查URL
-                        self.log(f"[调试] iframe URL: {self.page.url}")
-                    except Exception as debug_e:
-                        self.log(f"[调试] 获取页面信息失败: {str(debug_e)[:50]}")
                     empty_page_counter += 1
                     self.log(f"连续空页面数: {empty_page_counter}")