fix(evdev): Resource-Leak und Handling unbekannter Keycodes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_tray.py

@@ -375,3 +375,41 @@ class TestRecordHotkeyEvdev:
             record_hotkey(lambda n, c: results.append((n, c)), cancel)
 
         assert results == [("KEY_F12", False)]
+
+    def test_skips_unknown_keycodes(self):
+        import threading
+        from unittest.mock import MagicMock, patch
+
+        unknown_event = MagicMock()
+        unknown_event.type = 1  # EV_KEY
+        unknown_event.code = 9999  # unbekannter Keycode
+        unknown_event.value = 1  # Keydown
+
+        known_event = MagicMock()
+        known_event.type = 1  # EV_KEY
+        known_event.code = 88  # KEY_F12
+        known_event.value = 1  # Keydown
+
+        fake_device = MagicMock()
+        fake_device.fd = 42
+        fake_device.read.return_value = iter([unknown_event, known_event])
+        fake_device.close = MagicMock()
+
+        cancel = threading.Event()
+        results: list[tuple[str, bool]] = []
+
+        with patch(
+            "whisper_local.tray._hotkey_record_evdev.find_all_keyboards",
+            return_value=[fake_device],
+        ), patch(
+            "whisper_local.tray._hotkey_record_evdev.selectors.DefaultSelector"
+        ) as mock_sel_cls:
+            mock_sel = MagicMock()
+            mock_sel_cls.return_value = mock_sel
+            sel_key = MagicMock()
+            sel_key.data = fake_device
+            mock_sel.select.return_value = [(sel_key, None)]
+            from whisper_local.tray._hotkey_record_evdev import record_hotkey
+            record_hotkey(lambda n, c: results.append((n, c)), cancel)
+
+        assert results == [("KEY_F12", False)]

whisper_local/tray/_hotkey_record_evdev.py

@@ -11,16 +11,25 @@ from evdev import InputDevice, ecodes
 def find_all_keyboards() -> list[InputDevice]:
     """Gibt alle Input-Devices zurück, die EV_KEY-Events liefern können."""
     keyboards: list[InputDevice] = []
+    try:
         for path in evdev.list_devices():
             try:
                 device = InputDevice(path)
             except (PermissionError, OSError):
                 continue
+            try:
                 capabilities = device.capabilities()
+            except OSError:
+                device.close()
+                continue
             if ecodes.EV_KEY in capabilities:
                 keyboards.append(device)
             else:
                 device.close()
+    except BaseException:
+        for dev in keyboards:
+            dev.close()
+        raise
     return keyboards
 
 
@@ -58,7 +67,9 @@ def record_hotkey(
                 dev: InputDevice = key.data
                 for event in dev.read():
                     if event.type == ecodes.EV_KEY and event.value == 1:
-                        captured = _keycode_to_name(event.code)
+                        name = _keycode_to_name(event.code)
+                        if name:
+                            captured = name
                             break
                 if captured:
                     break