feat: add Win32 inserter backend with clipboard + Ctrl+V

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

whisper_local/inserter/_win32.py

@@ -0,0 +1,61 @@
+"""Text-Einfügung via pynput Clipboard + Ctrl+V (Windows)."""
+
+import asyncio
+import logging
+
+from pynput.keyboard import Controller, Key
+
+logger = logging.getLogger(__name__)
+
+keyboard_controller = Controller()
+
+PASTE_DELAY = 0.2
+
+
+class Win32Inserter:
+    def _get_clipboard(self) -> str:
+        """Liest den aktuellen Clipboard-Inhalt (Text)."""
+        import win32clipboard
+        try:
+            win32clipboard.OpenClipboard()
+            try:
+                data = win32clipboard.GetClipboardData(win32clipboard.CF_UNICODETEXT)
+                return data
+            except TypeError:
+                return ""
+            finally:
+                win32clipboard.CloseClipboard()
+        except Exception:
+            return ""
+
+    def _set_clipboard(self, text: str) -> None:
+        """Setzt den Clipboard-Inhalt."""
+        import win32clipboard
+        win32clipboard.OpenClipboard()
+        try:
+            win32clipboard.EmptyClipboard()
+            win32clipboard.SetClipboardText(text, win32clipboard.CF_UNICODETEXT)
+        finally:
+            win32clipboard.CloseClipboard()
+
+    async def insert(self, text: str) -> None:
+        """Fügt Text ins aktive Fenster ein via Clipboard + Ctrl+V."""
+        if not text:
+            return
+
+        old_clipboard = await asyncio.to_thread(self._get_clipboard)
+
+        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.sleep(PASTE_DELAY)
+        finally:
+            await asyncio.to_thread(self._set_clipboard, old_clipboard)
+
+        logger.info("Text eingefügt (%d Zeichen)", len(text))