fix: 将所有后端文件都迁移到 sau_backend 文件夹内

utils/network.py

@@ -1,28 +0,0 @@
-import asyncio
-import time
-from functools import wraps
-
-
-def async_retry(timeout=60, max_retries=None):
-    def decorator(func):
-        @wraps(func)
-        async def wrapper(*args, **kwargs):
-            start_time = time.time()
-            attempts = 0
-            while True:
-                try:
-                    return await func(*args, **kwargs)
-                except Exception as e:
-                    attempts += 1
-                    if max_retries is not None and attempts >= max_retries:
-                        print(f"Reached maximum retries of {max_retries}.")
-                        raise Exception(f"Failed after {max_retries} retries.") from e
-                    if time.time() - start_time > timeout:
-                        print(f"Function timeout after {timeout} seconds.")
-                        raise TimeoutError(f"Function execution exceeded {timeout} seconds timeout.") from e
-                    print(f"Attempt {attempts} failed: {e}. Retrying...")
-                    await asyncio.sleep(1)  # Sleep to avoid tight loop or provide backoff logic here
-
-        return wrapper
-
-    return decorator