diff --git a/backend/app/api/v1/endpoints/webhooks.py b/backend/app/api/v1/endpoints/webhooks.py
index 8437c3f..41d15ee 100644
--- a/backend/app/api/v1/endpoints/webhooks.py
+++ b/backend/app/api/v1/endpoints/webhooks.py
@@ -176,9 +176,10 @@ async def _append_warehouse_task(
         product_id=product.id,
         parent_task_id=last_main_task.id if last_main_task else None,
         task_name=task_name,
-        assignee_id="MOM 仓储系统",
+        # ★ assignee_id 显式置 None：不能填非 UUID 字符串，否则前端解析头像/用户信息报错导致节点跳过渲染
+        assignee_id=None,
         status="COMPLETED",
-        task_type="TRANSFER",  # 现有主线枚举 → is_main=True,画在中央主干道
+        task_type="WAREHOUSE",  # 仓储任务类型（is_main 判断已兼容 WAREHOUSE → 画在中央主干道）
         completed_at=_dt.now(),
         remark=record_remark,
     )
diff --git a/backend/app/services/product_service.py b/backend/app/services/product_service.py
index 11a8e87..30186df 100644
--- a/backend/app/services/product_service.py
+++ b/backend/app/services/product_service.py
@@ -140,7 +140,7 @@ async def get_product_by_serial(db: AsyncSession, serial_number: str) -> Product
     all_mains: list = []
     def _collect_main(tasks):
         for t in tasks:
-            if not t.parent_task_id or t.task_type in ("TRANSFER", "RECOVERY"):
+            if not t.parent_task_id or t.task_type in ("TRANSFER", "RECOVERY", "WAREHOUSE"):
                 all_mains.append(t)
             if t.child_tasks:
                 _collect_main(t.child_tasks)
@@ -465,7 +465,7 @@ async def update_overall_status(
                 Task.status.in_(["WIP", "PENDING"]),
                 or_(
                     Task.parent_task_id.is_(None),
-                    Task.task_type.in_(["TRANSFER", "RECOVERY"]),
+                    Task.task_type.in_(["TRANSFER", "RECOVERY", "WAREHOUSE"]),
                 ),
             ).order_by(Task.created_at.desc()).limit(1)
         )
@@ -657,7 +657,7 @@ async def get_all_products(
             Task.product_id.in_(product_ids),
             or_(
                 Task.parent_task_id.is_(None),
-                Task.task_type.in_(["TRANSFER", "RECOVERY"]),
+                Task.task_type.in_(["TRANSFER", "RECOVERY", "WAREHOUSE"]),
             ),
         )
         prio_expr = sa_case(
diff --git a/frontend/src/components/TaskTree/TaskFlowView.tsx b/frontend/src/components/TaskTree/TaskFlowView.tsx
index 5bf5b89..2c69ad8 100644
--- a/frontend/src/components/TaskTree/TaskFlowView.tsx
+++ b/frontend/src/components/TaskTree/TaskFlowView.tsx
@@ -3,7 +3,7 @@
  */
 import { memo, useMemo, useState, useEffect } from "react";
 import { Image } from "antd";
-import { FileText, User, X } from "lucide-react";
+import { FileText, Package, User, X } from "lucide-react";
 import type { TaskResponse } from "../../types/api";
 import { TASK_STATUS } from "../../types/api";
 import { getStatusConfig } from "../../constants/task";
@@ -13,7 +13,7 @@ import type { ModalTarget } from "./TaskTreeViewer";
 // 工具
 // ============================================================
 function fmtTime(d: string | null) { if (!d) return ""; const dt = new Date(d); const pad = (n: number) => String(n).padStart(2, "0"); return `${dt.getFullYear()}-${pad(dt.getMonth() + 1)}-${pad(dt.getDate())} ${pad(dt.getHours())}:${pad(dt.getMinutes())}`; }
-function isMain(t: TaskResponse) { return !t.parent_task_id || t.task_type === "TRANSFER" || t.task_type === "RECOVERY"; }
+function isMain(t: TaskResponse) { return !t.parent_task_id || t.task_type === "TRANSFER" || t.task_type === "RECOVERY" || t.task_type === "WAREHOUSE"; }
 function active(s: string) { return s === "WIP" || s === "PENDING"; }
 /** 微型右箭头 SVG */
 function ArrowRight({ color = "#9ca3af", big }: { color?: string; big?: boolean }) {
@@ -117,17 +117,29 @@ const SlimCard = memo(function SlimCard({
         <span className={`rounded-full ${sz.status} font-medium ${cfg.bg} ${cfg.text}`}>{cfg.label}</span>
       </div>
       <p className={`${sz.title} font-bold text-gray-800 truncate`}>{task.task_name}</p>
-      {/* 操作人（带用户图标）+ 在库转入人 */}
+      {/* 操作人（带用户图标）+ 在库转入人；仓储任务防御性渲染为系统节点 */}
       <div className={`${sz.metaRow} flex items-center gap-1`}>
-        {!isWarehouse && (
-          <span className={`${sz.assignee} text-gray-400 truncate inline-flex items-center gap-0.5`}>
-            <User className="h-2.5 w-2.5 shrink-0" />{assigneeName || task.assignee_id || "—"}
-          </span>
-        )}
-        {/* 📥 在库任务：显示实际执行"转入在库"的操作人（任务负责人） */}
-        {isWarehouse && task.assignee_id && (
-          <span className={`${sz.sub} text-emerald-600`}>📥 转入在库: {assigneeName || task.assignee_id}</span>
-        )}
+        {(() => {
+          const isSystemTask = task.task_name?.includes("扫码") || task.task_type === "WAREHOUSE";
+          if (isSystemTask) {
+            // ★ 仓储系统任务：不请求用户数据，直接显示系统图标 + 固定名（assignee_id 为 null 不报错）
+            return (
+              <span className={`${sz.assignee} text-gray-400 truncate inline-flex items-center gap-0.5`}>
+                <Package className="h-2.5 w-2.5 shrink-0" />MOM 仓储系统
+              </span>
+            );
+          }
+          if (isWarehouse && task.assignee_id) {
+            return (
+              <span className={`${sz.sub} text-emerald-600`}>📥 转入在库: {assigneeName || task.assignee_id}</span>
+            );
+          }
+          return (
+            <span className={`${sz.assignee} text-gray-400 truncate inline-flex items-center gap-0.5`}>
+              <User className="h-2.5 w-2.5 shrink-0" />{assigneeName || task.assignee_id || "—"}
+            </span>
+          );
+        })()}
       </div>
       {/* 单行时间（精确到分钟） */}
       <p className={`${sz.time} text-gray-300`}>
diff --git a/track-uniapp/src/pages/scan/components/FlowCard.vue b/track-uniapp/src/pages/scan/components/FlowCard.vue
index 2c02c89..96e6d6f 100644
--- a/track-uniapp/src/pages/scan/components/FlowCard.vue
+++ b/track-uniapp/src/pages/scan/components/FlowCard.vue
@@ -8,8 +8,10 @@
     </view>
     <text class="fc-name">{{ node.task_name }}</text>
     <view class="fc-meta">
+      <!-- 仓储系统任务：系统图标 + 固定名（assignee 为 null 不报错） -->
+      <text v-if="isSystemTask" class="fc-assignee">📦 MOM 仓储系统</text>
       <!-- 在库任务显示"转入在库"，其余显示负责人 -->
-      <text v-if="isWarehouseTask" class="fc-warehouse-in">📥 转入在库: {{ formatUserName(node.assignee_id) }}</text>
+      <text v-else-if="isWarehouseTask" class="fc-warehouse-in">📥 转入在库: {{ formatUserName(node.assignee_id) }}</text>
       <text v-else class="fc-assignee">👤 {{ formatUserName(node.assignee_id) || '未分配' }}</text>
     </view>
     <!-- 时间独占一行 -->
@@ -35,7 +37,13 @@ export default {
     isMainNode() {
       return !this.node.parent_task_id
         || this.node.task_type === "TRANSFER"
-        || this.node.task_type === "RECOVERY";
+        || this.node.task_type === "RECOVERY"
+        || this.node.task_type === "WAREHOUSE";
+    },
+    // ★ 仓储系统任务（扫码入库/扫码出库）：防御性渲染，不请求用户数据
+    isSystemTask() {
+      const name = String(this.node.task_name || "");
+      return name.includes("扫码") || this.node.task_type === "WAREHOUSE";
     },
     isWarehouseTask() {
       const name = String(this.node.task_name || "");
diff --git a/track-uniapp/src/pages/scan/components/TreeCanvas.vue b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
index e699356..94b2f49 100644
--- a/track-uniapp/src/pages/scan/components/TreeCanvas.vue
+++ b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
@@ -120,7 +120,7 @@ export default {
   },
   methods: {
     isMain(t) {
-      return !t.parent_task_id || t.task_type === "TRANSFER" || t.task_type === "RECOVERY";
+      return !t.parent_task_id || t.task_type === "TRANSFER" || t.task_type === "RECOVERY" || t.task_type === "WAREHOUSE";
     },
     // 当前主线的直接分支子节点（非主线）
     branchChildren(mainTask) {