fix: EvdevHotkeyListener.stop() cancelt Tasks und schließt Devices

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

tests/test_hotkey.py

@@ -127,3 +127,36 @@ class TestPynputHotkeyListenerStop:
             await asyncio.sleep(0)   # Loop einen Schritt weiter
             listener.stop()
             await asyncio.wait_for(listen_task, timeout=1.0)
+
+
+@pytest.mark.skipif(sys.platform != "linux", reason="evdev nur auf Linux")
+class TestEvdevListenerStop:
+    @pytest.mark.asyncio
+    async def test_stop_cancels_tasks_and_closes_devices(self):
+        from whisper_local.hotkey._evdev import EvdevHotkeyListener
+
+        listener = EvdevHotkeyListener("KEY_F12")
+
+        async def never_ending(device):
+            while True:
+                await asyncio.sleep(1)
+
+        fake_device = MagicMock()
+        fake_device.close = MagicMock()
+
+        with patch(
+            "whisper_local.hotkey._evdev.find_keyboard_devices",
+            return_value=[fake_device],
+        ):
+            listener._read_device = never_ending
+            listen_task = asyncio.create_task(listener.listen())
+            await asyncio.sleep(0.05)  # Loop-Schritt, damit listen() startet
+
+            assert len(listener._tasks) == 1
+            listener.stop()
+            await asyncio.sleep(0.05)
+
+            assert listener._tasks == []
+            fake_device.close.assert_called_once()
+
+        await asyncio.wait_for(listen_task, timeout=1.0)