chore: apply pending code updates

tests/performance/test_nfo_batch_performance.py

@@ -4,6 +4,7 @@ This module tests the performance characteristics of batch NFO creation
 including concurrent operations, TMDB API request optimization, and memory usage.
 """
 import asyncio
+import logging
 import time
 from pathlib import Path
 from typing import List
@@ -15,6 +16,8 @@ from src.core.services.nfo_service import NFOService
 from src.server.api.nfo import batch_create_nfo
 from src.server.models.nfo import NFOBatchCreateRequest
 
+logger = logging.getLogger(__name__)
+
 
 class TestConcurrentNFOCreation:
     """Test performance of concurrent NFO creation operations."""
@@ -83,8 +86,11 @@ class TestConcurrentNFOCreation:
         # Concurrent should take roughly (num_series / 5) * 0.1 = 0.2s
         assert elapsed_time < 1.0, "Concurrency not providing speedup"
         
-        print(f"\nPerformance: {num_series} series in {elapsed_time:.2f}s")
-        print(f"Rate: {num_series / elapsed_time:.2f} series/second")
+        logger.info("Batch NFO creation completed", extra={"num_series": num_series, "elapsed_s": elapsed_time})
+        logger.debug(
+            "Batch NFO creation rate",
+            extra={"series_per_second": num_series / elapsed_time},
+        )
     
     @pytest.mark.asyncio
     async def test_concurrent_nfo_creation_50_series(self):