v3.1 + 批次0: 智能回复重构基线 - ApprovalMatcher + 关键词降级 + 文档速修 + v4.0任务书面化

backend/app/api/wecom_callback.py

@@ -207,6 +207,33 @@ async def receive_message(
                 extra_data: dict = {}
                 if msg_type == "image":
                     extra_data["pic_url"] = pic_url
+                    # 下载企微图片到本地服务器，避免临时URL过期
+                    if media_id:
+                        try:
+                            import os
+                            import uuid
+
+                            # 下载图片二进制数据
+                            image_data = await wecom_service.download_temp_media(media_id)
+
+                            # 生成保存路径
+                            file_ext = ".jpg"  # 企微返回的图片通常是 jpg
+                            file_name = f"{uuid.uuid4()}{file_ext}"
+                            upload_dir = os.path.join("uploads", "images")
+                            os.makedirs(upload_dir, exist_ok=True)
+                            file_path = os.path.join(upload_dir, file_name)
+
+                            # 保存到本地
+                            with open(file_path, "wb") as f:
+                                f.write(image_data)
+
+                            # 构建本地访问 URL
+                            local_media_url = f"/media/images/{file_name}"
+                            extra_data["local_media_url"] = local_media_url
+                            logger.info(f"企微图片已下载到本地: media_id={media_id}, path={file_path}")
+                        except Exception as img_err:
+                            # 下载失败不影响消息处理，记录错误继续
+                            logger.warning(f"企微图片下载失败: media_id={media_id}, error={img_err}")
                 elif msg_type == "voice":
                     extra_data["format"] = msg_format
                 elif msg_type == "video":