1. 统一为使用基于pydantic的.env环境变量管理配置

2. 全项目基于loguru进行日志管理

QueryEngine/utils/__init__.py

@@ -12,7 +12,7 @@ from .text_processing import (
     format_search_results_for_prompt
 )
 
-from .config import Config, load_config
+from .config import Settings
 
 __all__ = [
     "clean_json_tags",
@@ -21,6 +21,5 @@ __all__ = [
     "extract_clean_response",
     "update_state_with_search_results",
     "format_search_results_for_prompt",
-    "Config",
-    "load_config"
+    "Settings",
 ]