test(ha_adb_common,connection): application-label tolerance (dual quotes, empty multi-label blocks, null, absent) + label cache reuse across cycles — no duplicate pm dump (P5-1)

custom_components/nvidia_shield/connection.py

@@ -392,6 +392,21 @@ class ShieldConnectionManager:
         """
         return self._protocol is not None
 
+    async def async_protocol_device_info(self) -> tuple[str, str] | None:
+        """(device name, MAC) via the protocol client (P5-1 migration).
+
+        None when the transport is absent or the lookup fails — callers
+        fall back to the config-entry id.
+        """
+        if self._protocol is None:
+            return None
+        with contextlib.suppress(Exception):
+            name, mac = await asyncio.wait_for(
+                self._protocol.async_get_name_and_mac(), timeout=10
+            )
+            return name, mac
+        return None
+
     @property
     def adb_poller(self):
         """The ADB poller (or None) — public accessor replacing the