style: 代码格式化和字符串处理优化

- 优化代码缩进和换行，提高可读性
- 统一使用单引号或双引号，保持一致性
- 移除冗余的空格和括号，精简代码

main.py

@@ -14,12 +14,20 @@ async def app():
         await xhs.run_async()
 
 
-async def server(host="0.0.0.0", port=8000, log_level="info", ):
+async def server(
+        host="0.0.0.0",
+        port=8000,
+        log_level="info",
+):
     async with XHS(**Settings().run()) as xhs:
-        await xhs.run_server(host, port, log_level, )
+        await xhs.run_server(
+            host,
+            port,
+            log_level,
+        )
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     with suppress(
             KeyboardInterrupt,
             CancelledError,