diff --git a/track-uniapp/src/pages/scan/detail.vue b/track-uniapp/src/pages/scan/detail.vue
index 73057eb..95dc519 100644
--- a/track-uniapp/src/pages/scan/detail.vue
+++ b/track-uniapp/src/pages/scan/detail.vue
@@ -10,6 +10,8 @@
         <view class="overall-bar" @tap="handleOverallBarClick">
           <text class="overall-label">宏观状态</text>
           <text :class="['overall-val', overallStatusClass(product.overall_status)]">{{ product.overall_status || '未激活 — 点击发起首道工序' }}</text>
+          <!-- 🔧 生命周期标识：生产阶段「发货测试」 vs 出库回流后「售后维修」 -->
+          <text v-if="lifeBadge" :class="['life-badge', lifeBadge.cls]">{{ lifeBadge.label }}</text>
           <text v-if="product.task_tree && product.task_tree.length && canEditOverallStatus" class="overall-arrow">▾</text>
         </view>
 
@@ -70,7 +72,7 @@
         <text class="sheet-title">{{ product && product.overall_status ? '修改宏观状态' : '🔔 请设定产品宏观状态' }}</text>
         <text class="sheet-hint">首次扫码，请选择一个状态以开启流转</text>
         <view class="sheet-options">
-          <view v-for="opt in OVERALL_OPTIONS" :key="opt" :class="['sheet-opt', product && product.overall_status === opt ? 'sheet-opt-active' : '']" @tap="handleSetOverallStatus(opt)"><text>{{ opt }}</text></view>
+          <view v-for="opt in availableOverallOptions" :key="opt" :class="['sheet-opt', product && product.overall_status === opt ? 'sheet-opt-active' : '']" @tap="handleSetOverallStatus(opt)"><text>{{ opt }}</text></view>
         </view>
         <button v-if="product && product.overall_status" class="sheet-close" @tap="showStatusPicker = false">关闭</button>
       </view>
@@ -124,7 +126,7 @@
           <text class="popup-hint">状态: {{ statusLabel(actionPopup.task && actionPopup.task.status) }} → 进行中</text>
           <view class="field-label">选择工序 <text class="required">*</text></view>
           <view class="user-grid">
-            <view v-for="opt in TASK_NAME_OPTIONS" :key="opt"
+            <view v-for="opt in availableTaskOptions" :key="opt"
               :class="['user-grid-item', receiveTaskName === opt ? 'user-grid-active' : '']"
               @tap="receiveTaskName = opt">{{ opt }}</view>
           </view>
@@ -217,21 +219,22 @@
 <script>
 import request, { get, post, patch, put, getBaseUrl } from "../../utils/request";
 import { setUserNameMap, formatUserName, formatUserAvatar } from "../../utils/format";
+import { taskOptionsFor, overallOptionsFor, lifecycleBadge } from "../../utils/lifecycle";
 import WorkspaceArea from "./components/WorkspaceArea.vue";
 import TreeCanvas from "./components/TreeCanvas.vue";
 import TaskSwipeCards from "./components/TaskSwipeCards.vue";
 
-const OVERALL_OPTIONS = ["备货", "生产", "测试", "维修", "在库", "已入库", "已出库"];
-const TASK_NAME_OPTIONS = ["备货", "生产", "测试", "维修", "在库"];
+// 🔧 工序可选项不再写死 —— 由 computed availableOverallOptions / availableTaskOptions
+//    按生命周期阶段（生产制造 / 售后回流）动态收窄，词表见 utils/lifecycle.js
 const STATUS_MAP = { PENDING: "待接收", WIP: "进行中", COMPLETED: "已完成", REJECTED: "已驳回", ARCHIVED: "已入库", OUTBOUND: "已出库", CANCELED: "已撤回" };
 
 export default {
   components: { WorkspaceArea, TreeCanvas, TaskSwipeCards },
   data() {
     return {
-      OVERALL_OPTIONS, loading: true, error: "", product: null,
+      loading: true, error: "", product: null,
       showStatusPicker: false, editProductVisible: false, editForm: { order_no: "", external_serial: "" }, editSaving: false,
-      users: [], TASK_NAME_OPTIONS,
+      users: [],
       createFirstVisible: false, isWarehouseTransfer: false, firstForm: { task_name: "", taskNameIdx: 0, assignee_id: "", assigneeLabel: "", assigneeIdx: 0, note: "" }, firstSaving: false,
       recordPopup: { visible: false, task: null }, recordForm: { recordId: null, remark: "", images: [], pendingCount: 0 }, recordSaving: false, isUploading: false,
       currentUser: null, currentUserId: "", currentUsername: "", currentUserRole: "", currentMode: "workspace", autoLockTaskId: "",
@@ -287,6 +290,42 @@ export default {
       checkTask(this.product.task_tree);
       return hasPermission;
     },
+    // 🔧 生命周期标签：只在售后回流环节（发货测试 / 售后维修）打红色标签
+    lifeBadge() {
+      return lifecycleBadge(
+        this.product && this.product.overall_status,
+        this.product && this.product.lifecycle_phase,
+      );
+    },
+    // ── 🔧 选项隔离：按生命周期阶段收窄可选工序 ──
+    // 生产制造设备只能排「备货/生产/测试/维修/在库」；
+    // 售后回流设备只能选「发货测试/售后维修/在库」，排不回前期环节。
+    isAfterSales() {
+      return !!(this.product && this.product.lifecycle_phase === "AFTER_SALES");
+    },
+    // 是否已有"真实工序"历史 —— 仅判断 task_tree 非空是不够的：
+    // 老设备首次「发起首道工序」建出来的任务名是占位符「待确认」，
+    // 此时产品已有一条任务，但接收人还没机会声明工序。若按 task_tree 非空
+    // 就判定"有历史"，接收下拉将只给生产工序，老设备永远选不到「售后维修」，
+    // 售后通路直接断掉。故这里必须排除占位符。
+    hasHistory() {
+      const walk = (tasks) => {
+        if (!tasks) return false;
+        for (const t of tasks) {
+          const name = String(t.task_name || "").trim();
+          if (name && name !== "待确认" && !name.includes("virtual_warehouse")) return true;
+          if (walk(t.child_tasks)) return true;
+        }
+        return false;
+      };
+      return walk(this.product && this.product.task_tree);
+    },
+    availableOverallOptions() {
+      return overallOptionsFor(this.product && this.product.lifecycle_phase, this.hasHistory);
+    },
+    availableTaskOptions() {
+      return taskOptionsFor(this.product && this.product.lifecycle_phase, this.hasHistory);
+    },
   },
   onLoad(options) { this.loadUsers(); this.loadCurrentUser(); const sn = options.serial || ""; if (sn) { this.doQuery(sn); return; } /* 🚀 兜底: 从 taskId 反查 product */ const tid = options.taskId || ""; if (tid) this.doQueryByTask(tid); },
   // 🚀 onShow 生命周期：每次页面显示时刷新留言板（解决从聊天室退回不更新问题）
@@ -335,7 +374,7 @@ export default {
     async loadUsers() { try { const res = await get("/users/", { limit: 200, dept: "IRIS" }); this.users = (res || []).filter(u => u.department === "IRIS"); this.userOptions = this.users.map(u => ({ id: u.username || u.id, name: u.full_name || u.username })); setUserNameMap(this.users); this.dictVersion += 1; } catch (e) { console.error('[loadUsers] 获取用户列表失败:', e); } },
     loadCurrentUser() { try { let user = uni.getStorageSync("user"); if (typeof user === "string" && user) { try { user = JSON.parse(user); } catch (e) { user = null; } } if (user && typeof user === "object") { this.currentUser = user; this.currentUserId = String(user.id || ""); this.currentUsername = user.username || ""; this.currentUserRole = user.role || ""; } } catch {} },
 
-    onTaskNameChange(e) { const idx = e.detail.value; this.firstForm.taskNameIdx = idx; this.firstForm.task_name = TASK_NAME_OPTIONS[idx]; },
+    onTaskNameChange(e) { const idx = e.detail.value; this.firstForm.taskNameIdx = idx; this.firstForm.task_name = this.availableTaskOptions[idx]; },
     onAssigneeChange(e) { const idx = e.detail.value; const u = this.users[idx]; if (u) { this.firstForm.assigneeIdx = idx; this.firstForm.assignee_id = u.username; this.firstForm.assigneeLabel = `${u.full_name} (${u.username})`; } },
     openCreateFirstTask() { this.isWarehouseTransfer = false; if (this.currentMode === 'tree') this.currentMode = 'workspace'; this.firstForm = { assignee_id: "", assigneeLabel: "", note: "" }; this.createFirstVisible = true; },
     handleOverallBarClick() { if (!this.product.task_tree || !this.product.task_tree.length) { this.openCreateFirstTask(); } else if (this.canEditOverallStatus) { this.showStatusPicker = true; } else { uni.showToast({ title: '仅超级管理员或当前主线负责人可修改状态', icon: 'none', duration: 2500 }); } },
@@ -356,7 +395,7 @@ export default {
       if (type === "deleteRecord") { this.doDeleteRecord(record); return; }
       if (type === "end") { this.confirmEndBranch(task); return; }
       if (type === "recall") { this.confirmRecall(task); return; }
-      if (type === "transfer" || type === "spawn") { uni.showLoading({ title: "加载数据..." }); try { if (!this.userOptions.length) await this.loadUsers(); if (!this.processOptions.length) this.processOptions = ["🏭 入库 (virtual_warehouse)", ...TASK_NAME_OPTIONS]; } finally { uni.hideLoading(); } }
+      if (type === "transfer" || type === "spawn") { uni.showLoading({ title: "加载数据..." }); try { if (!this.userOptions.length) await this.loadUsers(); this.processOptions = ["🏭 入库 (virtual_warehouse)", ...this.availableTaskOptions]; } finally { uni.hideLoading(); } }
       this.actionPopup = { visible: true, type, task }; this.rejectReason = ""; this.receiveRemark = ""; this.receiveTaskName = "";
       this.transferForm = { selectedUserId: "", isWarehouse: false, note: "" };
       this.spawnForm = { assignee_id: "", remark: "" };
@@ -490,6 +529,9 @@ export default {
 .overall-outbound { color: #4f46e5; }  /* 已出库：靛蓝 */
 .overall-warehouse { color: #ea580c; } /* 待仓库收货：橙 */
 .overall-arrow { font-size: 12px; color: #9ca3af; }
+/* 🔧 售后回流标识：红底白字，回流设备一眼可辨（生产阶段不打标） */
+.life-badge { font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 20px; flex-shrink: 0; }
+.life-badge-after { background: #dc2626; color: #ffffff; }
 .card { background: #fff; border-radius: 12px; padding: 14px; margin-bottom: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); flex-shrink: 0; min-height: 120px; }
 .card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; gap: 6px; }
 .card-header-right { display: flex; align-items: center; gap: 4px; flex-shrink: 0; flex-wrap: wrap; justify-content: flex-end; }
diff --git a/track-uniapp/src/utils/lifecycle.js b/track-uniapp/src/utils/lifecycle.js
new file mode 100644
index 0000000..b6b7e29
--- /dev/null
+++ b/track-uniapp/src/utils/lifecycle.js
@@ -0,0 +1,68 @@
+/**
+ * 生命周期阶段（lifecycle_phase）与工序选项隔离 — 移动端口径
+ *
+ * ⚠️ 与后端 backend/app/core/lifecycle.py、PC 端 frontend/src/constants/task.ts
+ *    是同一份词表，改动请三处同步。
+ *
+ * 售后回流阶段使用**独立工序名**（发货测试 / 售后维修），不复用生产阶段的
+ * 「测试 / 维修」，选中售后专属工序即代表设备进入售后生命周期。
+ *
+ * 本模块只负责"该给操作员看哪些选项"（体验层）；
+ * 真正的拦截在后端 task_service._enforce_step_isolation（防伪造传参）。
+ */
+
+export const LIFECYCLE_PHASE = {
+  PRODUCTION: "PRODUCTION",
+  AFTER_SALES: "AFTER_SALES",
+};
+
+/** 售后专属工序名 — 选中即代表设备进入售后生命周期 */
+export const STEP_SHIP_TEST = "发货测试";
+export const STEP_AFTER_SALES_REPAIR = "售后维修";
+
+const AFTER_SALES_ONLY_STEPS = [STEP_SHIP_TEST, STEP_AFTER_SALES_REPAIR];
+
+// ── 生产制造阶段合法工序（原有词表，一字未改）──
+export const PRODUCTION_TASK_OPTIONS = ["备货", "生产", "测试", "维修", "在库"];
+export const PRODUCTION_OVERALL_OPTIONS = [
+  "备货", "生产", "测试", "维修", "在库", "已入库", "已出库",
+];
+
+// ── 售后回流阶段：只保留「发货测试 / 售后维修 / 入库出库」──
+export const AFTER_SALES_TASK_OPTIONS = [STEP_SHIP_TEST, STEP_AFTER_SALES_REPAIR, "在库"];
+export const AFTER_SALES_OVERALL_OPTIONS = [
+  STEP_SHIP_TEST, STEP_AFTER_SALES_REPAIR, "在库", "已入库", "已出库",
+];
+
+/**
+ * 接收任务时可选工序。
+ *
+ * hasHistory = false（无任何历史任务的首次激活 / 老设备）时返回**并集**：
+ * 这类设备既可能是新投产，也可能是直接返厂售后的老设备，让操作员自己声明。
+ * 一旦选定售后专属工序，后端即把设备判为 AFTER_SALES，之后下拉自动收窄。
+ */
+export function taskOptionsFor(phase, hasHistory = true) {
+  if (phase === LIFECYCLE_PHASE.AFTER_SALES) return AFTER_SALES_TASK_OPTIONS;
+  if (!hasHistory) return [...PRODUCTION_TASK_OPTIONS, ...AFTER_SALES_ONLY_STEPS];
+  return PRODUCTION_TASK_OPTIONS;
+}
+
+/** 宏观状态可选值 — 同上，含已入库/已出库等终态 */
+export function overallOptionsFor(phase, hasHistory = true) {
+  if (phase === LIFECYCLE_PHASE.AFTER_SALES) return AFTER_SALES_OVERALL_OPTIONS;
+  if (!hasHistory) return [...PRODUCTION_OVERALL_OPTIONS, ...AFTER_SALES_ONLY_STEPS];
+  return PRODUCTION_OVERALL_OPTIONS;
+}
+
+/**
+ * 生命周期标签 — 只在设备确实处于售后回流环节时返回：
+ *   生命周期为 AFTER_SALES 且当前工序是「发货测试」或「售后维修」
+ *    → 红底白字，文案即工序名。
+ * 生产制造阶段一律返回 null（不打标），避免与售后设备混淆。
+ */
+export function lifecycleBadge(overallStatus, phase) {
+  if (phase !== LIFECYCLE_PHASE.AFTER_SALES) return null;
+  const step = String(overallStatus || "").trim();
+  if (step !== STEP_SHIP_TEST && step !== STEP_AFTER_SALES_REPAIR) return null;
+  return { label: step, phase: LIFECYCLE_PHASE.AFTER_SALES, cls: "life-badge-after" };
+}