fix(lab-sample): 台账改聚合真实市场生产质检数据

去掉 Excel 演示独有行，源表字段优先于补充表；按协议样本与科研捐献接收关联已发生业务数据，并修复导出分页超限。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/tests/test_lab_sample_processing.py

@@ -48,6 +48,60 @@ class LabSampleProcessingFieldsTest(unittest.TestCase):
         self.assertEqual(fmap["cd34Count"].dept, DEPT_QC)
         self.assertEqual(fmap["originalBloodWeightG"].dept, DEPT_PRODUCTION)
 
+    def test_source_fields_not_overridden_by_extra(self):
+        from app.services.lab_sample_processing import _build_row
+        from types import SimpleNamespace
+
+        sample = SimpleNamespace(id="S1", sample_code="ZKZX34000865", collection_protocol_id="P1")
+        party = SimpleNamespace(mother_name="真实妈妈")
+        coll = SimpleNamespace(sample_collect_time=None)
+        hospital = SimpleNamespace(hospital_name="真实医院")
+        reception = SimpleNamespace(
+            id="R1",
+            reception_time=None,
+            receive_temperature=None,
+            handler_name="接收人",
+            remark=None,
+            lab_storage_code="B0000103",
+        )
+        production = SimpleNamespace(
+            id="PR1",
+            original_blood_weight_g=72.08,
+            hes_volume_ml=None,
+            blood_type="B",
+            infectious_four_test_result="正常",
+            enriched_blood_weight_g=None,
+            cryopreservation_volume_ml=None,
+            handler_name="操作人",
+            remark=None,
+            original_blood_volume_ml=None,
+            nucleated_cell_count_1e8=None,
+            inoculation_amount=None,
+            cryopreservation_time=None,
+            storage_total_tubes=None,
+            available_cell_count_1e7=None,
+        )
+        row = _build_row(
+            dataset=DATASET_HSC,
+            sample=sample,
+            type_name="围产期造血干细胞",
+            party=party,
+            coll=coll,
+            hospital=hospital,
+            reception=reception,
+            production=production,
+            extra={
+                "motherName": "Excel妈妈",
+                "originalBloodWeightG": 1,
+                "cd34Count": "11.4",
+            },
+        )
+        self.assertEqual(row["motherName"], "真实妈妈")
+        self.assertEqual(row["originalBloodWeightG"], 72.08)
+        self.assertEqual(row["bloodType"], "B")
+        self.assertEqual(row["cd34Count"], "11.4")
+        self.assertFalse(row["fromExtraOnly"])
+
 
 if __name__ == "__main__":
     unittest.main()