完善空运锁舱与海运报价单单选回填，并增强模板预览与协同字段盖写。

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

inquiry-agent/tests/test_sea_options.py

@@ -60,11 +60,23 @@ class SeaOptionsTest(unittest.TestCase):
         kept = drop_invented_door_trade_terms("贸易条款：门到门", {"贸易条款": "门到门"})
         self.assertEqual(kept["贸易条款"], "门到门")
 
-    def test_prompt_lists_two_options_only(self):
-        text = sea_class_prompt()
-        self.assertIn("Port to Port", text)
-        self.assertIn("其他", text)
-        self.assertNotIn("门到门", text)
+    def test_wo012_trade_port_class_other(self):
+        """条款写 Port to Port、分类写其它：二者各归各栏，禁止互盖。"""
+        text = (
+            "运输方式：海运\n起运港：纽约港\n目的港：巴生西港\n品名：机器设备\n"
+            "货物数量：15件\n整柜或拼柜：整柜\n箱型箱量：40HQ*1\n"
+            "贸易条款：Port to Port\n运输分类：其它\n报价日期：2026-09-29"
+        )
+        got = harvest_sea_class(text, {"贸易条款": "门到门", "运输分类": "Port to Port"})
+        self.assertEqual(got.get("运输分类"), "其他")
+        got = drop_invented_door_trade_terms(text, {"贸易条款": "门到门", "运输分类": "其他"})
+        self.assertEqual(got.get("贸易条款"), "Port to Port")
+        self.assertEqual(got.get("运输分类"), "其他")
+
+    def test_trade_line_port_does_not_set_class_when_class_labeled_other(self):
+        text = "贸易条款：Port to Port\n运输分类：其它"
+        self.assertEqual(harvest_sea_class(text, {}).get("运输分类"), "其他")
+
 
 
 if __name__ == "__main__":