refactor(backend): 重构后端异常处理和模型管理

- 新增自定义异常类 BizException、NoteError 和 ProviderError
- 优化了模型管理相关的逻辑，包括加载、删除和测试连接等功能
- 改进了 Douyin 下载器的错误处理
- 调整了任务重试逻辑和笔记生成的异常处理- 更新了相关组件和页面以适应新的异常处理机制

backend/app/gpt/provider/OpenAI_compatible_provider.py

@@ -2,6 +2,9 @@ from typing import Optional, Union
 
 from openai import OpenAI
 
+from app.utils.logger import get_logger
+
+logging= get_logger(__name__)
 class OpenAICompatibleProvider:
     def __init__(self, api_key: str, base_url: str, model: Union[str, None]=None):
         self.client = OpenAI(api_key=api_key, base_url=base_url)
@@ -13,11 +16,16 @@ class OpenAICompatibleProvider:
 
     @staticmethod
     def test_connection(api_key: str, base_url: str) -> bool:
-        print(api_key)
         try:
             client = OpenAI(api_key=api_key, base_url=base_url)
-            client.models.list()
+            model = client.models.list()
+            # for segment in model:
+            #     print(segment)
+            # print(model)
+            logging.info("连通性测试成功")
             return True
         except Exception as e:
-            print(f"Error connecting to OpenAI API: {e}")
+            logging.info(f"连通性测试失败：{e}")
+
+            # print(f"Error connecting to OpenAI API: {e}")
             return False