落地转人工：三次补问或明确接管后出入口，真正转人工后冻结本票并允许新开询价。

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

inquiry-agent/tests/test_sea_text_inquiry.py

@@ -1304,6 +1304,34 @@ class SeaGroupOpsTests(unittest.TestCase):
         self.assertTrue(any("不能再上传附件" in t for t in texts))
         self.assertFalse(self.ledger.get_ticket(work_order_no=wo).attachments)
 
+    def test_handoff_group_stays_silent(self) -> None:
+        from agent.routing.group_intent import INTENT_FIELDS
+
+        wo, chat = self._open_group()
+        self.ledger.transition(work_order_no=wo, to_status="转人工")
+        sess = self.flow.session_of("sales1")
+        sess.status = "转人工"
+        sess.handoff_committed = True
+        self.flow._save(sess)
+        before = len(self.groups.sent)
+        phase = handle_group_collab(
+            InboundMessage(
+                sender_id="prod4",
+                message_id="h1",
+                content="客户名称张三",
+                chat_id=chat,
+                chat_type="group",
+            ),
+            flow=self.flow,
+            ledger=self.ledger,
+            injected_intent=INTENT_FIELDS,
+        )
+        self.assertEqual(phase, "handoff_ignore")
+        after = [x.get("content") or "" for x in self.groups.sent[before:] if x.get("kind") == "text"]
+        self.assertFalse(any("不能修改工单信息" in t for t in after))
+        ticket = self.ledger.get_ticket(work_order_no=wo)
+        self.assertNotIn("客户名称", ticket.collab_facts or {})
+
     def test_dissolve_then_cannot_recreate(self) -> None:
         wo, chat = self._open_group()
         phase = handle_group_collab(