feat: add stop() method to HotkeyListener protocol and PynputHotkeyListener

whisper_local/hotkey/_pynput.py

@@ -37,6 +37,12 @@ class PynputHotkeyListener:
         self.on_release: AsyncCallback | None = None
         self._loop: asyncio.AbstractEventLoop | None = None
         self._pressed = False
+        self._stop_event: asyncio.Event | None = None
+
+    def stop(self) -> None:
+        """Signalisiert dem listen()-Loop zu beenden."""
+        if self._loop is not None and self._stop_event is not None:
+            self._loop.call_soon_threadsafe(self._stop_event.set)
 
     async def _handle_key_event(self, key_down: bool) -> None:
         """Ruft den passenden Callback auf."""
@@ -69,13 +75,13 @@ class PynputHotkeyListener:
     async def listen(self) -> None:
         """Startet den pynput Keyboard-Listener und blockiert async."""
         self._loop = asyncio.get_running_loop()
-        stop_event = asyncio.Event()
+        self._stop_event = asyncio.Event()
 
         listener = Listener(on_press=self._on_press, on_release=self._on_release)
         listener.start()
         logger.info("Lausche auf %s via pynput", self.key_name)
 
         try:
-            await stop_event.wait()  # Blockiert bis zum Programmende
+            await self._stop_event.wait()
         finally:
             listener.stop()