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/musicmouse/services/lirc/protocol.py

@@ -7,6 +7,15 @@ A line looks like::
 that is ``<code> <repeat, hex> <button name> <remote name>``. ``repeat`` is ``00`` for
 the first press and increments while the button is held - lircd has no separate
 key-up event, just repeats stopping.
+
+irserver (the IRTrans daemon, which serves this protocol on its own port 8765) sends
+the same shape but lowercases the button and remote names and always reports repeat
+``00``::
+
+    b7b2000000000000 00 key_play hauppauge
+
+Button names are therefore uppercased here, so the rest of the code sees lircd's
+spelling either way.
 """
 
 from __future__ import annotations
@@ -34,4 +43,4 @@ def parse_line(line: str) -> LircButtonEvent | None:
         repeat = int(repeat_hex, 16)
     except ValueError:
         return None
-    return LircButtonEvent(code=code, repeat=repeat, button=button, remote=remote)
+    return LircButtonEvent(code=code, repeat=repeat, button=button.upper(), remote=remote)

python-backend/musicmouse/services/lirc/service.py

@@ -99,7 +99,7 @@ class LircService:
                 if not raw:
                     return
                 event = parse_line(raw.decode(errors="replace"))
-                if event is None or event.remote != self.config.remote_name:
+                if event is None or event.remote.casefold() != self.config.remote_name.casefold():
                     continue
                 self._handle(event)
         finally: