feat: Implement Garmin sync, login improvements, and utility scripts

backend/tests/unit/test_rate_limiter.py

@@ -1,8 +1,10 @@
-import pytest
 from unittest.mock import MagicMock, patch
+
+import pytest
 from fastapi import HTTPException
+
 from src.services.rate_limiter import RateLimiter
-import asyncio
+
 
 @pytest.mark.asyncio
 async def test_rate_limiter_allows_requests_within_limit():