refactor: 清理冗余代码和过时配置

tests/test_schemas.py

@@ -7,11 +7,13 @@ import json
 import pytest
 from pydantic import ValidationError
 
-from app.services.pi_client import (
+from app.services.summary_utils import (
     JsonNotFoundError,
+    extract_json as _extract_json,
+)
+from app.services.pi_client import (
     PiProcessError,
     PiTimeoutError,
-    extract_json as _extract_json,
 )
 from app.services.pdf_downloader import PdfDownloadError
 from app.services.schemas import (