IR remote: accept irserver's lowercase button and remote names

irserver (musicdolphin's IRTrans daemon) serves lircd's network protocol on port 8765,
but sends "key_play hauppauge" where lircd sends "KEY_PLAY Hauppauge", so every press
was dropped. Uppercase button names when parsing and compare the remote name
case-insensitively.

irserver also always reports repeat 00, so a held transport button is not debounced
there; volume ramps as intended.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

python-backend/tests/test_lirc.py

@@ -60,6 +60,13 @@ def test_surrounding_whitespace_is_ignored() -> None:
     assert parse_line("  0000000000001781 00 BTN_1 Hauppauge  \n") is not None
 
 
+def test_irservers_lowercase_button_names_are_uppercased() -> None:
+    # Verbatim from irserver's lircd-compatible port on musicdolphin.
+    event = parse_line("b7b2000000000000 00 key_play hauppauge\n")
+    assert event is not None
+    assert event.button == "KEY_PLAY"
+
+
 # --------------------------------------------------------------------------- service
 
 
@@ -195,6 +202,26 @@ async def test_events_from_another_remote_are_ignored(
     assert not any(isinstance(event, IntentEvent) for event in seen)
 
 
+async def test_irservers_lowercase_lines_are_acted_on(
+    lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
+) -> None:
+    station, server = lircd
+    port = server.sockets[0].getsockname()[1]
+    seen: list[Event] = []
+    sim.bus.subscribe_all(seen.append)
+
+    # The config still says "Hauppauge" (the default); irserver says "hauppauge".
+    task = await _run_service(sim, _lirc_config(port))
+    try:
+        await station.wait_connected()
+        await station.send("b7b2000000000000 00 key_play hauppauge")
+        await sim.bus.drain()
+    finally:
+        task.cancel()
+
+    assert [type(event) for event in seen if isinstance(event, IntentEvent)] == [PlayRequested]
+
+
 async def test_transport_buttons_only_act_on_the_first_press(
     lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
 ) -> None: