[Wake/VAD/STT]：完成本地唤醒、人声端点检测与转写入口，包含小杰小杰唤醒、VAD 录音切分、Metadata STT 和 sherpa-onnx 错误边界

src/owner_voice_pet/__init__.py

@@ -16,6 +16,9 @@ from .models import (
     WakeEvent,
 )
 from .transport import AudioRingBuffer, FileReplayTransport, MemoryAudioTransport
+from .wakeword import KeywordWakeWordProvider
+from .vad import EnergyVadProvider, VadRecorder
+from .stt import MetadataSttProvider, is_valid_transcript_text
 
 __all__ = [
     "AppConfig",
@@ -25,6 +28,11 @@ __all__ = [
     "ErrorCode",
     "FileReplayTransport",
     "MemoryAudioTransport",
+    "KeywordWakeWordProvider",
+    "EnergyVadProvider",
+    "VadRecorder",
+    "MetadataSttProvider",
+    "is_valid_transcript_text",
     "Message",
     "PipelineState",
     "PlaybackResult",