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_air_field_contract.py

@@ -21,10 +21,28 @@ from agent.schema.field_validate import (
     air_general_cargo_collab_defaults,
     validate_required_fields,
 )
-from agent.schema.tms_air_query import assemble_air_query
+from agent.schema.tms_air_query import assemble_air_query, volume_cbm_number
 
 
 class AirFieldContractTests(unittest.TestCase):
+    def test_volume_dimension_product(self) -> None:
+        self.assertEqual(volume_cbm_number("1.1*1.2*3"), "3.96")
+        self.assertEqual(volume_cbm_number("1.1x1.2x3"), "3.96")
+        self.assertEqual(volume_cbm_number("2CBM"), "2")
+        out = assemble_air_query(
+            {
+                "目的港": "吉隆坡",
+                "品名": "普货",
+                "件数": "3件",
+                "毛重": "5",
+                "体积": "1.1*1.2*3",
+                "包装方式": "托盘",
+                "报价日期": "2026-10-08",
+            }
+        )
+        self.assertTrue(out["ok"], out)
+        self.assertEqual(out["facts"]["体积"], "1.1*1.2*3")
+
     def test_origin_optional_still_ok(self) -> None:
         result = validate_required_fields(
             facts={