fix: add pywin32 dep, move Controller into class, wrap keyboard in to_thread

whisper_local/inserter/_win32.py

@@ -7,12 +7,13 @@ from pynput.keyboard import Controller, Key
 
 logger = logging.getLogger(__name__)
 
-keyboard_controller = Controller()
-
 PASTE_DELAY = 0.2
 
 
 class Win32Inserter:
+    def __init__(self):
+        self._keyboard = Controller()
+
     def _get_clipboard(self) -> str:
         """Liest den aktuellen Clipboard-Inhalt (Text)."""
         import win32clipboard
@@ -38,6 +39,13 @@ class Win32Inserter:
         finally:
             win32clipboard.CloseClipboard()
 
+    def _send_paste(self) -> None:
+        """Simuliert Ctrl+V."""
+        self._keyboard.press(Key.ctrl)
+        self._keyboard.press('v')
+        self._keyboard.release('v')
+        self._keyboard.release(Key.ctrl)
+
     async def insert(self, text: str) -> None:
         """Fügt Text ins aktive Fenster ein via Clipboard + Ctrl+V."""
         if not text:
@@ -48,12 +56,7 @@ class Win32Inserter:
         try:
             await asyncio.to_thread(self._set_clipboard, text)
             await asyncio.sleep(0.05)
-
-            keyboard_controller.press(Key.ctrl)
-            keyboard_controller.press('v')
-            keyboard_controller.release('v')
-            keyboard_controller.release(Key.ctrl)
-
+            await asyncio.to_thread(self._send_paste)
             await asyncio.sleep(PASTE_DELAY)
         finally:
             await asyncio.to_thread(self._set_clipboard, old_clipboard)