fix: flow VERSION=2 for new entries; optional ENTER gains the ADB keyevent-66 fallback; CI installs androidtvremote2 for the real-library tests (F4, F5, F6)

custom_components/nvidia_shield/config_flow.py

@@ -96,7 +96,7 @@ def _build_selectors():
 class NvidiaShieldConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     """Handle a config flow for Nvidia Shield."""
 
-    VERSION = 1
+    VERSION = 2
 
     def __init__(self):
         self._user_data = {}

custom_components/nvidia_shield/connection.py

@@ -451,6 +451,12 @@ class ShieldConnectionManager:
             return False
         return await self._poller.send_digit_keyevent(digit)
 
+    async def send_enter_key(self) -> bool:
+        """ENTER via the ADB keyevent path (KEYCODE_ENTER = 66, §7 fallback)."""
+        if not self.available:
+            return False
+        return await self._poller.send_enter_keyevent()
+
     # ── Lifecycle ──
 
     async def async_start(self) -> None:

custom_components/nvidia_shield/ha_adb_common/adb_client.py

@@ -174,6 +174,14 @@ class AdbClientBase:
             _LOGGER.debug("ADB digit keyevent %d (%s)", 7 + int(digit), digit)
         return result is not None
 
+    async def send_enter_keyevent(self) -> bool:
+        """Send ENTER via `input keyevent` (KEYCODE_ENTER = 66) — the ENTER
+        fallback for the §7 channel sequence."""
+        result = await self.shell("input keyevent 66")
+        if result is not None:
+            _LOGGER.debug("ADB ENTER keyevent (66)")
+        return result is not None
+
     async def bring_to_foreground(self, package: str) -> bool:
         """Bring an app to the foreground using monkey command."""
         result = await self.shell(

custom_components/nvidia_shield/media_player.py

@@ -834,9 +834,15 @@ class NvidiaShieldMediaPlayer(MediaPlayerEntity):
                         media={"media_content_id": digit, "media_content_type": "channel"},
                     )
                 await asyncio.sleep(delay)
-            if send_enter:
-                _LOGGER.debug("play_media(channel): optional ENTER key sent")
-                await self._manager.send_protocol_key("KEYCODE_ENTER")
+            if (
+                send_enter
+                and self._manager is not None
+                and not await self._manager.send_protocol_key("KEYCODE_ENTER")
+            ):
+                # ENTER fallback chain: protocol key → ADB keyevent 66.
+                # (No legacy-entity tier: the external androidtv_remote has
+                # no ENTER service to delegate to.)
+                await self._manager.send_enter_key()
         except asyncio.CancelledError:
             raise