fix(regulatory): 优先从附件字段识别适用条件

tests/test_regulatory_condition.py

@@ -49,6 +49,39 @@ def test_detect_regulatory_condition_candidates_from_summary_items(django_user_m
     assert candidates["product_name"]["suggested"] == "甲胎蛋白检测试剂盒"
 
 
+def test_detect_regulatory_condition_prefers_attachment_fields_over_chapter_title(settings, tmp_path, django_user_model):
+    settings.MEDIA_ROOT = tmp_path
+    user = django_user_model.objects.create_user(username="owner", password="pass")
+    conversation = Conversation.objects.create(user=user, title="会话")
+    summary = FileSummaryBatch.objects.create(
+        conversation=conversation,
+        user=user,
+        batch_no="FS-COND",
+        status=FileSummaryBatch.Status.SUCCESS,
+        product_name="第1章 监管信息",
+    )
+    application = tmp_path / "application.txt"
+    application.write_text(
+        "产品名称：甲胎蛋白检测试剂盒\n型号规格：20人份/盒\n预期用途：用于人血清中甲胎蛋白检测\n注册类型：首次注册\n",
+        encoding="utf-8",
+    )
+    FileSummaryItem.objects.create(
+        batch=summary,
+        file_index=1,
+        directory_level="1. 监管信息 / 1.2 申请表",
+        file_name="申请表.txt",
+        file_type="txt",
+        relative_path="1.监管信息/申请表.txt",
+        storage_path=str(application),
+    )
+
+    candidates = detect_regulatory_condition_candidates(summary)
+
+    assert candidates["product_name"]["suggested"] == "甲胎蛋白检测试剂盒"
+    assert candidates["model_spec"]["suggested"] == "20人份/盒"
+    assert candidates["intended_use"]["suggested"] == "用于人血清中甲胎蛋白检测"
+
+
 def test_workflow_pauses_before_rule_scope_until_conditions_confirmed(settings, tmp_path, django_user_model):
     settings.MEDIA_ROOT = tmp_path
     user = django_user_model.objects.create_user(username="owner", password="pass")