feat: 语音确认、联调与运维增强

- 语音：序数解析（第一个/第二个等）、解析失败计数与 API detail.retry_remaining；
  百度 ASR 固定 dev_pid 为普通话；SurgeryPipelineError 支持 extra 并入 HTTP detail。
- Demo：demo 路由与假 RTSP、客户端 index 与 README；BackendResolver 与配置调整。
- 可观测：消耗 TSV 日志、语音文件日志、终端 Markdown 辅助；相关测试与依赖更新。
- 注意：.env 仍被 gitignore，本地密钥不会进入本提交。

Made-with: Cursor

app/services/surgery_pipeline.py

@@ -10,6 +10,8 @@ from app.schemas import (
     SurgeryPendingConfirmationResponse,
 )
 from app.services.video.session_manager import CameraSessionManager
+from fastapi.concurrency import run_in_threadpool
+
 from app.services.voice_resolution import VoiceConfirmationService, VoiceResolveResult
 from app.surgery_errors import SurgeryPipelineError
 
@@ -79,6 +81,18 @@ class SurgeryPipeline:
     def voice_status(self, surgery_id: str) -> dict[str, object] | None:
         return self._sessions.voice_status(surgery_id)
 
+    async def list_voice_audits(
+        self,
+        surgery_id: str,
+        *,
+        limit: int = 50,
+        offset: int = 0,
+    ):
+        """持久化表 `voice_confirmation_audits` 分页，用于追溯/对账/报表。"""
+        return await self._voice.list_voice_audits_for_surgery(
+            surgery_id, limit=limit, offset=offset
+        )
+
     def get_pending_confirmation_for_client(
         self, surgery_id: str
     ) -> SurgeryPendingConfirmationResponse | None:
@@ -114,3 +128,35 @@ class SurgeryPipeline:
             filename=filename,
             content_type=content_type,
         )
+
+    async def resolve_pending_confirmation_from_client_text(
+        self,
+        surgery_id: str,
+        confirmation_id: str,
+        recognized_text: str,
+    ) -> VoiceResolveResult:
+        """浏览器等客户端本机识别后的文本，解析规则与 WAV 路径一致（无需 MinIO/百度）。"""
+        return await self._voice.resolve_from_recognized_text(
+            surgery_id=surgery_id,
+            confirmation_id=confirmation_id,
+            recognized_text=recognized_text,
+        )
+
+    async def get_pending_prompt_audio_mp3(
+        self,
+        surgery_id: str,
+        confirmation_id: str,
+    ) -> bytes:
+        """待确认 `prompt_text` 的百度 TTS MP3，供模拟客户端用 Audio 直放。"""
+        pending = self._sessions.get_pending_confirmation_by_id(
+            surgery_id, confirmation_id
+        )
+        if pending is None or pending.status != "pending":
+            raise SurgeryPipelineError(
+                "CONFIRMATION_NOT_FOUND",
+                "未找到该待确认项或已处理。",
+            )
+        return await run_in_threadpool(
+            self._voice.synthesize_prompt_to_mp3,
+            pending.prompt_text,
+        )