feat: protocol_settings wiring + InvalidAuth reauth start + entry migration to v2; PLATFORMS gains REMOTE (placeholder platform until t10)

custom_components/nvidia_shield/remote.py

@@ -0,0 +1,19 @@
+"""Remote entities for NVIDIA Shield — Phase 2 step 3 (t10).
+
+Remotely controlling the Shield runs over the absorbed remote-protocol
+transport (androidtvremote2) managed by ShieldConnectionManager. This
+placeholder keeps the Platform.REMOTE forward from failing while t10
+lands the real entity on top.
+"""
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Remote entities arrive with the Phase 2 command-routing unit (t10)."""