[本地唤醒模型]：完成KWS模型下载和检查，包含manifest、配置和model-check

tests/test_wake_vad_stt.py

@@ -8,7 +8,11 @@ from owner_voice_pet.models import AudioFrame, AudioSegment, ErrorCode, Provider
 from owner_voice_pet.config import AppConfig
 from owner_voice_pet.stt import CloudAsrSttProvider, MetadataSttProvider, SherpaOnnxSttProvider, is_valid_transcript_text
 from owner_voice_pet.vad import EnergyVadProvider, VadRecorder
-from owner_voice_pet.wakeword import KeywordWakeWordProvider, MissingWakeWordModelProvider
+from owner_voice_pet.wakeword import (
+    KeywordWakeWordProvider,
+    MissingWakeWordModelProvider,
+    SherpaOnnxKeywordWakeWordProvider,
+)
 
 
 def make_frame(
@@ -47,6 +51,13 @@ class WakeVadSttTests(unittest.TestCase):
             MissingWakeWordModelProvider("/missing/model.onnx").load()
         self.assertEqual(raised.exception.code, ErrorCode.WAKE_MODEL_MISSING)
 
+    def test_sherpa_kws_missing_model_is_structured(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            provider = SherpaOnnxKeywordWakeWordProvider(tmp)
+            with self.assertRaises(ProviderError) as raised:
+                provider.load()
+        self.assertEqual(raised.exception.code, ErrorCode.WAKE_MODEL_MISSING)
+
     def test_vad_recorder_returns_segment_after_silence(self) -> None:
         provider = EnergyVadProvider()
         provider.load()