确定运输方式前的多句询价带到所选方式并按该方式抽字段；成交已定后放舱不再推跟进，未成交原因不再被当成新询价。

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

inquiry-agent/agent/policy/land_text_flow.py

@@ -17,7 +17,13 @@ from typing import Any, Optional
 from agent.ledger.memory_ledger import MemoryLedger
 from agent.llm.extract_text import extract_inquiry_snapshot
 from agent.policy import inquiry_copy as copy
-from agent.policy.air_text_flow import FlowSession, ReplyFn
+from agent.policy.air_text_flow import (
+    FlowSession,
+    ReplyFn,
+    is_waiting_mode_session,
+    stack_user_text,
+    waiting_mode_source,
+)
 from agent.policy.sea_text_flow import SeaTextInquiryFlow
 from agent.schema.field_validate import harvest_oral_measures, validate_required_fields
 from agent.schema.land_options import (
@@ -149,9 +155,11 @@ class LandTextInquiryFlow(SeaTextInquiryFlow):
         cargo = {k: v for k, v in facts.items() if k not in option_keys}
         merged = dict(base)
         merged.update(cargo)
-        facts = harvest_oral_measures(text, merged)
+        # 还在问运输方式时，重量体积和陆运选项要对照前面几句，不只看「1」。
+        source = waiting_mode_source(sess, text)
+        facts = harvest_oral_measures(source, merged)
         # 选项只从原话+能对上枚举的模型值收；禁止模型「陆运」盖掉已选的国内运输拼车。
-        facts = harvest_land_options(text, facts)
+        facts = harvest_land_options(source, facts)
         b_opt = " ".join(
             str(x).strip()
             for x in (
@@ -174,7 +182,10 @@ class LandTextInquiryFlow(SeaTextInquiryFlow):
                     phase="need_mode",
                     business_line="",
                     facts=facts,
-                    immutable_text=sess.immutable_text if sess and sess.immutable_text else text,
+                    immutable_text=stack_user_text(
+                        sess.immutable_text if sess else "",
+                        text,
+                    ),
                 )
             )
             return "need_mode"
@@ -211,6 +222,11 @@ class LandTextInquiryFlow(SeaTextInquiryFlow):
                 inbound_raw=inbound_raw,
             )
 
+        if is_waiting_mode_session(sess):
+            from agent.schema.field_validate import shape_facts_for_chosen_mode
+
+            # 刚选定陆运：不留空运件数、海运箱型和贸易条款。重量体积仍按陆运货物字段留。
+            facts = shape_facts_for_chosen_mode(facts, "LAND")
         return self._advance_front(
             sender_id=sender_id,
             facts=facts,