fix: make ADB poll failures visible and stop stale-state cling; cancel tracked poll tasks on unload (B2, B5-prep); lint cleanups across daemon modules

custom_components/nvidia_shield/adb_session.py

@@ -8,8 +8,11 @@ Re-exports MediaSessionInfo and ensure_adb_key for existing importers.
 
 import logging
 
-from .ha_adb_common import AdbClientBase, ensure_adb_key as _ensure_adb_key
-from .ha_adb_common import MediaSessionInfo  # noqa: F401  (re-export)
+from .ha_adb_common import (
+    AdbClientBase,
+    MediaSessionInfo,  # noqa: F401  (re-export)
+)
+from .ha_adb_common import ensure_adb_key as _ensure_adb_key
 
 _LOGGER = logging.getLogger(__name__)