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/connection.py

@@ -495,6 +495,41 @@ class ShieldConnectionManager:
             snapshot[name] = {"age": round(time.monotonic() - stamp, 3), "value": value}
         return snapshot
 
+    async def send_text_ime(self, text: str) -> bool:
+        """Text entry via the protocol client's send_text (P5-2).
+
+        The Shield may swallow the text when its on-screen virtual keyboard
+        is up (RESEARCH_IDEAS §2 availability gate) — the call reports the
+        send outcome; callers fall back to the ADB input-text path only
+        when the protocol transport is down or the send failed.
+        """
+        if self._protocol is None:
+            return False
+        try:
+            self._protocol.send_text(text)
+            return True
+        except Exception as err:
+            _LOGGER.debug("protocol send_text failed: %s", err)
+            return False
+
+    async def send_adb_input_text(self, text: str) -> bool:
+        """ADB fallback for text entry: `input text` (P5-2).
+
+        Used only when the protocol send_text path is unavailable/failed.
+        Shell-quoted (shlex) so single quotes and spaces survive.
+        """
+        import shlex
+
+        poller = self._poller
+        if poller is None or not self.connected:
+            return False
+        try:
+            result = await poller.shell(f"input text {shlex.quote(text)}")
+            return result is not None
+        except Exception as err:
+            _LOGGER.debug("adb input text failed: %s", err)
+            return False
+
     def app_label(self, package: str | None) -> str | None:
         """Cached manifest label for a package (P5-1), or None.