fix(connection): ADB outage clears only ADB-derived store fields — protocol push truth survives by TTL (F2)

custom_components/nvidia_shield/connection.py

@@ -53,17 +53,20 @@ FIELD_IS_AVAILABLE = "is_available"
 FIELD_CURRENT_APP = "current_app"
 FIELD_VOLUME_INFO = "volume_info"
 
-ALL_FIELDS = (
-    FIELD_AWAKE,
-    FIELD_SESSIONS,
-    FIELD_AUDIO_PLAYBACK,
-    FIELD_RUNNING_APPS,
+# ADB-derived fields (cleared when the ADB connection goes down — they are
+# regenerated by the watchdog); protocol pushes (IS_ON/IS_AVAILABLE/
+# CURRENT_APP/VOLUME_INFO) are device-reported truth and expire by TTL only,
+# so an ADB outage never clobbers them.
+ADB_FIELDS = (FIELD_AWAKE, FIELD_SESSIONS, FIELD_AUDIO_PLAYBACK, FIELD_RUNNING_APPS)
+PROTOCOL_FIELDS = (
     FIELD_IS_ON,
     FIELD_IS_AVAILABLE,
     FIELD_CURRENT_APP,
     FIELD_VOLUME_INFO,
 )
 
+ALL_FIELDS = ADB_FIELDS + PROTOCOL_FIELDS
+
 
 def volume_tuple(info) -> tuple | None:
     """Normalize the protocol's volume push to ``(level, max, muted)``.
@@ -206,7 +209,14 @@ class ShieldConnectionManager:
         the constructor; the import stays local so this module remains
         importable where androidtvremote2 is not installed.
         """
-        import androidtvremote2
+        try:
+            import androidtvremote2
+        except ImportError:
+            _LOGGER.warning(
+                "androidtvremote2 is not installed — the remote-protocol "
+                "transport is disabled and the entry degrades to ADB-only."
+            )
+            return None
 
         return androidtvremote2.AndroidTVRemote(
             client_name=client_name,
@@ -547,7 +557,9 @@ class ShieldConnectionManager:
                 await self._poller.disconnect()
             except Exception:
                 _LOGGER.debug("disconnect during reconnect decision failed", exc_info=True)
-            self.store.clear(*ALL_FIELDS)
+            # Only ADB-derived fields expire here: protocol pushes are
+            # device-reported truth and must survive an ADB outage (t11 F2).
+            self.store.clear(*ADB_FIELDS)
             self._notify()
 
     @staticmethod