[桌宠 UI 与生图资产]：完成桌宠状态展示与项目内透明资产，包含 UI 状态映射、无 GUI fallback、PNG 资产生成脚本和资产校验

src/owner_voice_pet/__init__.py

@@ -23,6 +23,8 @@ from .conversation import ConversationContext
 from .llm import MockLlmProvider, OpenAICompatibleLlmProvider
 from .pipeline import PipelineResult, VoicePipeline
 from .tts import MacSayTtsProvider, SentenceBuffer, SineTtsProvider
+from .assets import validate_pet_assets
+from .ui import ConsolePetWindow, PetStateController, PetVisualState
 
 __all__ = [
     "AppConfig",
@@ -45,6 +47,10 @@ __all__ = [
     "MacSayTtsProvider",
     "SentenceBuffer",
     "SineTtsProvider",
+    "validate_pet_assets",
+    "ConsolePetWindow",
+    "PetStateController",
+    "PetVisualState",
     "Message",
     "PipelineState",
     "PlaybackResult",