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)

tests/test_command_routing.py

@@ -55,6 +55,7 @@ class FakeAdbPoller:
     def __init__(self):
         self.media_calls: list[str] = []
         self.digits: list[str] = []
+        self.enter_calls: list[bool] = []
         self.results: dict[str, bool] = {}
         self.digit_result = True
 
@@ -70,6 +71,10 @@ class FakeAdbPoller:
         self.digits.append(digit)
         return self.digit_result
 
+    async def send_enter_keyevent(self) -> bool:
+        self.enter_calls.append(True)
+        return True
+
     async def bring_to_foreground(self, package: str) -> bool:
         return True
 
@@ -214,6 +219,23 @@ class TestChannelDigits:
         assert player._manager._poller.digits == ["5"]  # ADB digit keyevent served
         assert served == []
 
+    async def test_optional_enter_falls_back_to_adb_keyevent(self, modules):
+        player, served, _i = make_player(modules)
+        protocol = player._manager._protocol
+        poller = player._manager._poller
+        protocol.fail_keys.add("KEYCODE_ENTER")
+        protocol.key_calls.clear()
+
+        player._entry.options["channel_send_enter"] = True  # §7 optional ENTER on
+
+        await player._channel_entry_sequence(["4", "1"])  # digits fine, ENTER fails
+
+        # digits served by protocol; ENTER retried over ADB keyevent 66
+        assert ("KEYCODE_4", "SHORT") in protocol.key_calls
+        assert poller.digits == []  # digits were fine over the protocol
+        assert poller.enter_calls == [True]
+        assert served == []
+
     async def test_legacy_fallback_when_both_transports_down(self, modules):
         player, served, _intents = make_player(modules)
         protocol = player._manager._protocol