{"service":"文档转PDF服务","version":"1.0.0","endpoints":{"GET /convert":"单个文件转换（GET方式，参数：url, filename）","POST /convert":"单个文件转换（POST方式）","POST /convert/batch":"批量文件转换（多线程）","POST /upload":"文件上传接口","POST /optimize-image/upload":"上传图片后执行去底/增强","GET /files":"列出所有上传的文件","GET /files/{filename}":"获取指定文件的信息","GET /files/{filename}/download":"下载指定的上传文件","DELETE /files/{filename}":"删除指定文件","GET /uploads/{filename}":"访问上传的文件（静态文件服务）","POST /print/submit":"提交打印任务","GET /print/jobs":"列出打印任务","GET /print/jobs/{job_id}":"获取打印任务信息","GET /print/pending":"客户端接口：获取待打印任务（备用，推荐使用WebSocket）","WS /print/ws/{printer_name}":"WebSocket实时推送接口（推荐）","GET /print/clients/status":"查询客户端在线状态","PUT /print/jobs/{job_id}/status":"客户端接口：更新打印任务状态","GET /health":"健康检查"}}