fix(regulatory): 修复换行产品名称提取不全

tests/test_regulatory_text_extract.py

@@ -14,6 +14,21 @@ def test_extract_text_reads_plain_text(tmp_path):
     assert result.content_hash
 
 
+def test_extract_text_keeps_wrapped_product_name(tmp_path):
+    path = tmp_path / "申请表.txt"
+    path.write_text(
+        "产品名称：呼吸道合胞病毒、肺炎支原体核酸检测试剂盒\n"
+        "（荧光PCR法）\n"
+        "型号规格：24人份/盒\n",
+        encoding="utf-8",
+    )
+
+    result = extract_text(path)
+
+    assert result.field_candidates["产品名称"] == "呼吸道合胞病毒、肺炎支原体核酸检测试剂盒 （荧光PCR法）"
+    assert result.field_candidates["型号规格"] == "24人份/盒"
+
+
 def test_extract_text_reports_unsupported_file(tmp_path):
     path = tmp_path / "image.png"
     path.write_bytes(b"png")