refactor(config): 将服务配置改为从 settings 获取

将 SecurityService, ModelService, EmbeddingService 的配置依赖从构造函数注入改为直接从 app.config.config.settings 获取。

这简化了服务类的实例化过程，并实现了配置的集中管理。

app/service/embedding/embedding_service.py

@@ -2,22 +2,20 @@ from typing import List, Union
 
 import openai
 from openai.types import CreateEmbeddingResponse
-
+from app.config.config import settings
 from app.log.logger import get_embeddings_logger
 
 logger = get_embeddings_logger()
 
 
 class EmbeddingService:
-    def __init__(self, base_url: str):
-        self.base_url = base_url
 
     async def create_embedding(
         self, input_text: Union[str, List[str]], model: str, api_key: str
     ) -> CreateEmbeddingResponse:
         """Create embeddings using OpenAI API"""
         try:
-            client = openai.OpenAI(api_key=api_key, base_url=self.base_url)
+            client = openai.OpenAI(api_key=api_key, base_url=settings.BASE_URL)
             response = client.embeddings.create(input=input_text, model=model)
             return response
         except Exception as e: