[LLM/TTS 与对话闭环]：完成语音对话主链路，包含上下文管理、NewAPI 兼容 LLM、分句 TTS、状态机和错误恢复测试

src/owner_voice_pet/__init__.py

@@ -19,6 +19,10 @@ from .transport import AudioRingBuffer, FileReplayTransport, MemoryAudioTranspor
 from .wakeword import KeywordWakeWordProvider
 from .vad import EnergyVadProvider, VadRecorder
 from .stt import MetadataSttProvider, is_valid_transcript_text
+from .conversation import ConversationContext
+from .llm import MockLlmProvider, OpenAICompatibleLlmProvider
+from .pipeline import PipelineResult, VoicePipeline
+from .tts import MacSayTtsProvider, SentenceBuffer, SineTtsProvider
 
 __all__ = [
     "AppConfig",
@@ -33,6 +37,14 @@ __all__ = [
     "VadRecorder",
     "MetadataSttProvider",
     "is_valid_transcript_text",
+    "ConversationContext",
+    "MockLlmProvider",
+    "OpenAICompatibleLlmProvider",
+    "PipelineResult",
+    "VoicePipeline",
+    "MacSayTtsProvider",
+    "SentenceBuffer",
+    "SineTtsProvider",
     "Message",
     "PipelineState",
     "PlaybackResult",