fix(image): 增强抠图失败时的诊断日志，记录原始响应内容

python-api/app/ai/providers/volcengine_mediakit_provider.py

@@ -107,6 +107,11 @@ class VolcengineMediakitProvider:
 
             code = data.get("code", -1)
             if code != 0:
+                logger.warning(
+                    f"[MediaKit] 抠图业务失败: code={code}, "
+                    f"message={data.get('message', 'N/A')}, "
+                    f"raw_response={data}, image_url={image_url[:80]}..."
+                )
                 raise _map_mediakit_error(
                     response.status_code,
                     data.get("message", f"抠图失败: code={code}"),

python-api/app/api/v1/image.py

@@ -169,12 +169,18 @@ async def remove_background(
     移除图片背景，返回透明背景图片 URL。
     """
     try:
+        logger.info(
+            f"[RemoveBackground] 开始抠图: image_url={req.image_url[:80]}..., scene={req.scene}"
+        )
         result = await mediakit_service.remove_background(
             image_url=req.image_url,
             scene=req.scene,
         )
 
         if not result.image_url:
+            logger.error(
+                f"[RemoveBackground] 抠图返回空 URL: raw={result.raw}"
+            )
             raise HTTPException(status_code=500, detail="抠图失败：未返回结果图片 URL")
 
         logger.info(f"[RemoveBackground] 抠图成功: {result.image_url[:80]}...")
@@ -189,5 +195,7 @@ async def remove_background(
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e))
     except Exception as e:
-        logger.error(f"[RemoveBackground] 抠图失败: {e}")
+        logger.error(
+            f"[RemoveBackground] 抠图失败: image_url={req.image_url[:80]}..., error={e}"
+        )
         raise HTTPException(status_code=500, detail=f"抠图失败: {e}")