[Pipeline状态机]：完成全双工状态控制骨架，包含事件诊断、取消图和恢复协调测试

src/owner_voice_pet/models.py

@@ -7,6 +7,7 @@ from typing import Any, Mapping
 
 class PipelineState(str, Enum):
     IDLE = "idle"
+    LISTENING = "listening"
     WAKE_LISTENING = "wake_listening"
     SPEECH_DETECTING = "speech_detecting"
     RECORDING = "recording"
@@ -14,6 +15,8 @@ class PipelineState(str, Enum):
     THINKING = "thinking"
     SPEAKING = "speaking"
     INTERRUPTED = "interrupted"
+    TOOL_RUNNING = "tool_running"
+    RECOVERING = "recovering"
     ERROR_RECOVERING = "error_recovering"