diff --git a/backend/app/api/lead.py b/backend/app/api/lead.py
index b87d3332..f2ae88ca 100644
--- a/backend/app/api/lead.py
+++ b/backend/app/api/lead.py
@@ -1,16 +1,17 @@
 """AI获客 - 客户咨询接口"""
 from fastapi import APIRouter, HTTPException
 from pydantic import BaseModel
-import json, os, datetime, subprocess
+import json, os, datetime, urllib.request
 
 router = APIRouter(prefix="/api/cma/lead", tags=["AI获客"])
 
-# ai-cs 实盘分流脚本（跨 profile 调用）
-# 必须以 ai-cs 身份 + 其 HERMES_HOME/HOME 运行：脚本内用 `hermes send` 复用该 profile 的企微凭据；
-# cma-backend.service 的 Environment 为空，不显式传入会解析到非 ai-cs 的 profile（root 默认 profile）。
-AI_CS_USER = "ai-cs"
-AI_CS_HOME = "/var/lib/wecom-ai-cs/profile"
-AI_CS_ROUTING_SCRIPT = AI_CS_HOME + "/scripts/routing-live.py"
+# 客户咨询通知唯一通道：系统总线中继 8660 → 任总 DM。
+# 2026-10-22 起取代旧的 ai-cs routing-live.py（该 profile/user 已下线，runuser 必然失败且异常被吞，
+# 导致线索静默丢失通知）。中继类别按契约取 fallback（无会话兜底），company 类被中继直接拒绝。
+BUS_RELAY_URL = "http://127.0.0.1:8660/bus/send"
+BUS_KEY_FILE = "/srv/hermes/shared/.secrets/bus_relay.key"
+BOSS_USERID = "200653946"  # 任富海
+NOTIFY_LOG = "/root/leads/notify.log"
 
 class LeadRequest(BaseModel):
     name: str
@@ -18,22 +19,54 @@ class LeadRequest(BaseModel):
     requirement: str = ""
     source: str = "sxbh.ltd"
 
-def notify_boss(name, phone, requirement):
-    """额外推给任总（经 ai-cs 实盘分流脚本；失败不影响主流程）"""
+def _log_notify(ok, detail):
+    """通知结果落痕（旧实现 except: pass 静默吞异常，导致线索漏通知无人知晓）"""
     try:
-        subprocess.run(
-            ["runuser", "-u", AI_CS_USER, "--",
-             "env", f"HOME={AI_CS_HOME}", f"HERMES_HOME={AI_CS_HOME}",
-             f"USER={AI_CS_USER}", f"LOGNAME={AI_CS_USER}",
-             "/usr/bin/python3", AI_CS_ROUTING_SCRIPT,
-             requirement or "（未填需求）",
-             f"{name} {phone}",
-             "website:sxbh.ltd"],
-            timeout=30, capture_output=True,
-        )
+        os.makedirs(os.path.dirname(NOTIFY_LOG), exist_ok=True)
+        with open(NOTIFY_LOG, "a", encoding="utf-8") as f:
+            f.write("%s %s %s\n" % (datetime.datetime.now().isoformat(timespec="seconds"),
+                                    "OK" if ok else "FAIL", detail))
     except Exception:
         pass
 
+
+def notify_boss(name, phone, requirement):
+    """客户咨询通知：经系统总线中继 8660 推任总 DM。失败不阻断主流程，但必须留痕。"""
+    now = datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
+    content = (
+        "## 新客户咨询（sxbh.ltd 官网）\n"
+        f"> 姓名：{name}\n"
+        f"> 电话：{phone}\n"
+        f"> 需求：{requirement or '（未填）'}\n"
+        f"> 时间：{now}\n\n"
+        "承诺 30 分钟内联系。"
+    )
+    try:
+        with open(BUS_KEY_FILE, encoding="utf-8") as f:
+            key = f.read().strip()
+        if not key:
+            raise RuntimeError("bus key empty")
+        payload = json.dumps({
+            "touser": BOSS_USERID,
+            "msgtype": "markdown",
+            "content": content,
+            "notice_class": "fallback",
+        }, ensure_ascii=False).encode("utf-8")
+        req = urllib.request.Request(
+            BUS_RELAY_URL, data=payload,
+            headers={"Content-Type": "application/json",
+                     "X-API-Key": key,
+                     "X-Notice-Class": "fallback"},
+            method="POST",
+        )
+        with urllib.request.urlopen(req, timeout=10) as resp:
+            body = resp.read().decode("utf-8", "ignore")[:300]
+        _log_notify(True, body)
+        return True
+    except Exception as e:
+        _log_notify(False, "%s: %s" % (type(e).__name__, e))
+        return False
+
 @router.post("")
 def create_lead(data: LeadRequest):
     """接收客户咨询并保存"""