feat: 手术视频消耗、待确认与持久化改造

- 新增 Alembic 初始迁移、领域明细模型及归档持久化与重试链路\n- 拆分视频会话注册表、分类处理、推理时间窗聚合与流处理\n- 消耗日志：TSV/Markdown 含 top2/top3；item_id 优先产品编码；待确认记「待确认」行，语音确认后落正式行并更新汇总\n- 待确认时内存/DB 明细为占位行，确认后替换；拒绝时移除占位\n- 分类 probs 先 detach/cpu 再转 NumPy，修复 MPS/CUDA 上推理被静默跳过\n- 补充集成测试、归档与设备张量等单测

Made-with: Cursor

tests/test_api_contract.py

@@ -148,6 +148,16 @@ def test_get_result_503_not_ready(api_app: FastAPI) -> None:
     assert r.json()["detail"]["code"] == "RESULT_NOT_READY"
 
 
+def test_get_result_503_empty_details(api_app: FastAPI) -> None:
+    pipeline = MagicMock()
+    pipeline.get_consumption_details_for_client = AsyncMock(return_value=[])
+    api_app.dependency_overrides[get_surgery_pipeline] = lambda: pipeline
+    client = TestClient(api_app)
+    r = client.get("/client/surgeries/123456/result")
+    assert r.status_code == 503
+    assert r.json()["detail"]["code"] == "RESULT_NOT_READY"
+
+
 def test_pending_confirmation_200_and_404(api_app: FastAPI) -> None:
     ts = datetime(2026, 4, 21, 12, 0, tzinfo=timezone.utc)
     payload = SurgeryPendingConfirmationResponse(