feat(配置): 添加APP_BASE_URL配置并显示API文档链接

在配置中添加APP_BASE_URL环境变量，用于设置应用基础URL
启动时打印API文档和OpenAPI JSON的访问链接

app/core/config.py

@@ -10,6 +10,7 @@ class Settings(BaseSettings):
     # 应用配置
     APP_NAME: str = "LLM过滤系统"
     API_V1_STR: str = "/api/v1"
+    APP_BASE_URL: str = os.getenv("APP_BASE_URL", "http://localhost:8000")
     
     # 数据库配置
     MONGODB_URL: str = os.getenv("MONGODB_URL", "mongodb://localhost:27017")

app/main.py

@@ -59,6 +59,9 @@ app.include_router(api_router, prefix=settings.API_V1_STR)
 async def startup_db_client():
     await connect_to_mongo()
     await sensitive_word_filter.load_sensitive_words()
+    base = settings.APP_BASE_URL.rstrip("/")
+    print(f"API 文档: {base}/docs")
+    print(f"OpenAPI JSON: {base}{settings.API_V1_STR}/openapi.json")
 
 @app.on_event("shutdown")
 async def shutdown_db_client():
@@ -71,4 +74,4 @@ async def root():
         "app_name": settings.APP_NAME,
         "version": "1.0.0",
         "message": "欢迎使用LLM过滤系统API"
-    }
\ No newline at end of file
+    }