chore: apply pending code updates

tests/api/test_concurrent_anime_add.py

@@ -4,12 +4,15 @@ This test verifies that the /api/anime/add endpoint can handle
 multiple concurrent requests without blocking.
 """
 import asyncio
+import logging
 import time
 from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 from httpx import ASGITransport, AsyncClient
 
+logger = logging.getLogger(__name__)
+
 from src.server.fastapi_app import app
 from src.server.services.auth_service import auth_service
 from src.server.services.background_loader_service import get_background_loader_service
@@ -103,7 +106,7 @@ async def test_concurrent_anime_add_requests(authenticated_client):
         f"indicating possible blocking issues"
     )
 
-    print(f"3 concurrent anime add requests completed in {total_time:.2f}s")
+    logger.info("3 concurrent anime add requests completed in %.2fs", total_time)
 
 
 @pytest.mark.asyncio
@@ -130,4 +133,4 @@ async def test_same_anime_concurrent_add(authenticated_client):
     keys = [r.json().get("key") for r in responses]
     assert keys[0] == keys[1], "Both responses should have the same key"
 
-    print(f"Concurrent same-anime requests handled correctly: {statuses}")
+    logger.info("Concurrent same-anime requests handled correctly: %s", statuses)