diff --git a/core/image_cache.py b/core/image_cache.py
index 9ee0be47..040c1126 100644
--- a/core/image_cache.py
+++ b/core/image_cache.py
@@ -198,8 +198,8 @@ class ImageCache:
             except Exception:
                 try:
                     tmp_path.unlink(missing_ok=True)
-                except Exception:
-                    pass
+                except Exception as cleanup_exc:
+                    logger.debug("image_cache tmp cleanup failed: %s", cleanup_exc)
                 raise
 
             if total <= 0:
diff --git a/core/torrent_clients/transmission.py b/core/torrent_clients/transmission.py
index 0cd9b47c..266bda79 100644
--- a/core/torrent_clients/transmission.py
+++ b/core/torrent_clients/transmission.py
@@ -98,7 +98,7 @@ class TransmissionAdapter:
             return None
         auth = (self._username, self._password) if self._username else None
         payload = {'method': method, 'arguments': arguments}
-        for attempt in range(2):
+        for _attempt in range(2):
             try:
                 with self._session_id_lock:
                     sid = self._session_id