feat: complete voice session safety and confirmation flow

docs/technical/voice-co-creation-phase-a-migration-api-draft.md

@@ -568,6 +568,22 @@ async def create_voice_turn_from_text(...)
 async def get_voice_turn(...)
 ```
 
+### 解决低置信度确认
+
+```python
+@router.post(
+    "/voice-sessions/{session_id}/turns/{turn_id}/confirm",
+    response_model=VoiceTurnSummaryResponse,
+)
+async def resolve_voice_turn_confirmation(...)
+```
+
+支持：
+
+- `accept`: 按当前理解继续本轮
+- `retry_recording`: 撤回当前理解，重新录音
+- `switch_to_text`: 撤回当前理解，切换到文本输入
+
 ### 结束并保存
 
 ```python
@@ -578,6 +594,13 @@ async def get_voice_turn(...)
 async def finalize_voice_session(...)
 ```
 
+### 获取语音共创 analytics
+
+```python
+@router.get("/voice-sessions/analytics", response_model=VoiceSessionAnalyticsResponse)
+async def get_voice_session_analytics(...)
+```
+
 ### 放弃会话
 
 ```python