[结束提示音优化]：完成Codex通知音资产内置，包含音频提取、配置默认值和回归测试

src/owner_voice_pet/__init__.py

@@ -27,7 +27,7 @@ from .llm import MockLlmProvider, OpenAICompatibleLlmProvider
 from .pipeline import PipelineResult, VoicePipeline
 from .runtime import LiveVoiceRuntime, RuntimeSummary, TerminalRuntimeReporter, TurnResult, build_live_runtime
 from .simulation import run_simulated_live
-from .tts import CloudTtsProvider, MacSayTtsProvider, SentenceBuffer, SineTtsProvider, make_prompt_chime, sanitize_tts_text
+from .tts import CloudTtsProvider, MacSayTtsProvider, SentenceBuffer, SineTtsProvider, make_end_chime, make_prompt_chime, sanitize_tts_text
 from .assets import validate_pet_assets
 from .ui import ConsolePetWindow, PetStateController, PetVisualState
 
@@ -70,6 +70,7 @@ __all__ = [
     "MacSayTtsProvider",
     "SentenceBuffer",
     "SineTtsProvider",
+    "make_end_chime",
     "make_prompt_chime",
     "sanitize_tts_text",
     "validate_pet_assets",