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

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

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] = []
-    for path in evdev.list_devices():
-        try:
-            device = InputDevice(path)
-        except (PermissionError, OSError):
-            continue
-        capabilities = device.capabilities()
-        if ecodes.EV_KEY in capabilities:
-            keyboards.append(device)
-        else:
-            device.close()
+    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
 
 
@@ -58,8 +67,10 @@ 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)
-                        break
+                        name = _keycode_to_name(event.code)
+                        if name:
+                            captured = name
+                            break
                 if captured:
                     break