test(config_flow,media_player,remote): digit-delay/send-enter options (store + window/error validation), IME-first text entry with ADB fallback tier, icon column parse/prefill/store (P5-2)

custom_components/nvidia_shield/remote.py

@@ -174,3 +174,17 @@ class NvidiaShieldRemoteEntity(RemoteEntity):
                     await manager.send_protocol_key(key_name, direction)
             if delay_secs > 0:
                 await asyncio.sleep(delay_secs)
+
+    async def async_send_text(self, text: str) -> bool:
+        """Text entry (P5-2) via the protocol send_text (remote surface).
+
+        Falls back to ADB `input text` only when the protocol transport is
+        down or the send failed (the Shield may swallow IME text while its
+        on-screen keyboard is up, RESEARCH_IDEAS §2).
+        """
+        manager = self._manager_of()
+        if manager is None or not text:
+            return False
+        if await manager.send_text_ime(text):
+            return True
+        return await manager.send_adb_input_text(text)