refactor: Improve code readability by formatting query parameters in user endpoints and enhancing error handling in sound playback

tests/services/test_scheduler.py

@@ -63,7 +63,8 @@ class TestSchedulerService:
         }
 
         with patch.object(
-            scheduler_service.credit_service, "recharge_all_users_credits",
+            scheduler_service.credit_service,
+            "recharge_all_users_credits",
         ) as mock_recharge:
             mock_recharge.return_value = mock_stats
 
@@ -75,7 +76,8 @@ class TestSchedulerService:
     async def test_daily_credit_recharge_failure(self, scheduler_service) -> None:
         """Test daily credit recharge task with failure."""
         with patch.object(
-            scheduler_service.credit_service, "recharge_all_users_credits",
+            scheduler_service.credit_service,
+            "recharge_all_users_credits",
         ) as mock_recharge:
             mock_recharge.side_effect = Exception("Database error")