chore(sync): zsy_developcc 全量同步至 qyqy_develop（W26 口径）

- 分支内容对齐 qyqy_develop b6ec3aa，树完全一致（同步后 git diff 为空）
- 覆盖本轮全部交付：客服 Agent 重构（安全路由 / 五出口 / 记忆与画像 / RAG 全链路）
  + 开发文档 62 份编号体系（D1.1 v1.17 索引）
  + 新增 D2.10-客服Agent端到端答辩文档-2026-09-21.html
- 基线：e239eb7（2026-09-17 品牌口径统一快照），本提交为其直接后继

tests/unit/worker/test_runtime_worker_dispatch.py

@@ -61,6 +61,38 @@ def test_visitor_does_not_request_memory_extraction() -> None:
     assert requested is False
 
 
+def test_customer_service_never_requests_memory_extraction() -> None:
+    """`DEC-19`：客服不写长期记忆——命中偏好信号、甚至带业务事件也不入抽取队列。"""
+    context = RequestContext(
+        user_id="9001", trace_id="cs-memory-trace", roles=("customer",),
+        permissions=("agent:run",), data_scope="self",
+    )
+    result = AgentResult(run_id="cs-memory-run", result=CoreResult(text="客服答复"))
+
+    def decision(agent_type: str) -> bool:
+        return WorkerRuntime.should_request_memory_extraction(
+            agent_type=agent_type, context=context,
+            message="我的风险偏好是稳健型，只买货币基金",
+            result=result, business_events=("trade.completed",),
+        )
+
+    assert decision("customer_service") is False
+    # 对照组：闸门只拦客服，不能顺手把其它 Agent 的长期记忆一起关掉。
+    assert decision("risk_agent") is True
+
+
+def test_customer_service_never_produces_profile_candidate() -> None:
+    """`DEC-19`：客服不产生画像候选，已登录客户陈述偏好也不产候选。"""
+    context = RequestContext(
+        user_id="9001", trace_id="cs-candidate-trace", roles=("customer",),
+        permissions=("agent:run",), data_scope="self",
+    )
+
+    assert WorkerRuntime.should_request_profile_candidate(
+        agent_type="customer_service", context=context, message="我的风险偏好是稳健型"
+    ) is False
+
+
 def test_visitor_does_not_request_profile_candidate() -> None:
     """访客即使陈述偏好也不能创建画像候选。"""
     context = RequestContext(