补齐成交跟进：按线路推成交通知、收下未成交原因、协商中按工作日再问。

成交走询价消息服务；陆运/海运私聊下一句能记下原因；协商中回执写明顺延三个工作日和下次 9：00。

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

inquiry-agent/agent/handlers/group_collab.py

@@ -17,6 +17,7 @@ from agent.policy.sea_group_ops import (
     apply_group_deal,
     apply_product_quote,
     apply_tms_quote_choice,
+    capture_group_lost_reason,
     dissolve_group,
     group_client_of,
     handle_group_file,
@@ -138,6 +139,16 @@ def handle_group_inbound(
         classify_group_text,
     )
 
+    lost = capture_group_lost_reason(
+        flow=engine,
+        ticket=ticket,
+        sender_id=message.sender_id,
+        text=message.content or "",
+        sess=sess,
+    )
+    if lost:
+        return lost
+
     intent = classify_group_text(message.content or "", injected=injected_intent)
     logger.info(
         "group_inbound 文字 chat=%s sender=%s intent=%s chars=%s",