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/ha_adb_common/adb_client.py

@@ -3,6 +3,7 @@
 Subclasses add device-specific polling (media sessions, wake state, etc.).
 """
 
+import contextlib
 import logging
 
 from .media_session import MediaSessionInfo, parse_all_media_sessions, parse_media_session
@@ -90,18 +91,15 @@ class AdbClientBase:
     async def disconnect(self) -> None:
         """Disconnect from the device."""
         if self._device:
-            try:
+            with contextlib.suppress(Exception):
                 await self._device.close()
-            except Exception:
-                pass
         self._device = None
         self._connected = False
 
     async def shell(self, cmd: str) -> str | None:
         """Run a shell command, reconnecting if needed."""
-        if not self._connected or not self._device:
-            if not await self.connect():
-                return None
+        if (not self._connected or not self._device) and not await self.connect():
+            return None
         try:
             return await self._device.shell(cmd)
         except Exception as err:
@@ -187,7 +185,7 @@ class AdbClientBase:
         seen = set()
 
         # System packages to exclude
-        _EXCLUDED = {
+        excluded = {
             "com.android.systemui",
             "com.android.tv.settings",
             "com.nvidia.diagtools",
@@ -206,7 +204,7 @@ class AdbClientBase:
                     match = re.search(r"I=(\S+)/", stripped)
                 if match:
                     pkg = match.group(1)
-                    if pkg not in seen and pkg not in _EXCLUDED and not pkg.startswith("."):
+                    if pkg not in seen and pkg not in excluded and not pkg.startswith("."):
                         seen.add(pkg)
                         apps.append({"package": pkg})