feat: add main entry-point with asyncio event loop

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

tests/test_main.py

@@ -0,0 +1,67 @@
+from unittest.mock import AsyncMock, MagicMock, patch
+
+import numpy as np
+import pytest
+
+from whisper_local.__main__ import App
+
+
+class TestApp:
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_app_init(self, mock_hotkey_class, mock_transcriber_class):
+        app = App()
+        assert app.recorder is not None
+        assert app.inserter is not None
+        mock_transcriber_class.assert_called_once()
+        mock_hotkey_class.assert_called_once()
+
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_on_press_starts_recording(self, mock_hotkey_class, mock_transcriber_class):
+        app = App()
+        app.recorder = MagicMock()
+
+        import asyncio
+        asyncio.run(app.on_press())
+
+        app.recorder.start.assert_called_once()
+
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_on_release_stops_and_transcribes(self, mock_hotkey_class, mock_transcriber_class):
+        mock_transcriber = MagicMock()
+        mock_transcriber.transcribe.return_value = "Hallo"
+        mock_transcriber_class.return_value = mock_transcriber
+
+        app = App()
+        app.recorder = MagicMock()
+        audio = np.zeros(16000, dtype=np.float32)
+        app.recorder.stop.return_value = audio
+        app.inserter = MagicMock()
+        app.inserter.insert = AsyncMock()
+
+        import asyncio
+        asyncio.run(app.on_release())
+
+        app.recorder.stop.assert_called_once()
+        mock_transcriber.transcribe.assert_called_once_with(audio)
+        app.inserter.insert.assert_awaited_once_with("Hallo")
+
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_on_release_no_audio_skips(self, mock_hotkey_class, mock_transcriber_class):
+        mock_transcriber = MagicMock()
+        mock_transcriber_class.return_value = mock_transcriber
+
+        app = App()
+        app.recorder = MagicMock()
+        app.recorder.stop.return_value = None
+        app.inserter = MagicMock()
+        app.inserter.insert = AsyncMock()
+
+        import asyncio
+        asyncio.run(app.on_release())
+
+        mock_transcriber.transcribe.assert_not_called()
+        app.inserter.insert.assert_not_awaited()