feat: 管理员代工模式 — 前端权限放开 + 后端审计留痕

前端:
  - WorkspaceArea 新增 currentUserRole prop
  - isAssignee/canRecall: SUPER_ADMIN/SUPERVISOR 上帝视角直接放行
  - 管理员代操作时显示黄色提示条: 正在以管理员身份代[原负责人]操作
  - detail.vue: loadCurrentUser 提取并保存 user.role

后端:
  - _create_task_log 新增 task_assignee_id 参数
  - operator_id!=task_assignee_id 时自动拼接 [管理员xx代办操作]
  - 12处调用点全部传入 task_assignee_id
  - receive_task 位置赋值确认为 task.assignee_id(非 operator_id)

track-uniapp/src/pages/scan/components/WorkspaceArea.vue

@@ -78,6 +78,9 @@
         <view class="fc-time">{{ formatTaskTime(lockedTask) }}</view>
       </view>
 
+      <view v-if="isAdminProxy" class="admin-proxy-notice">
+        <text class="proxy-text">⚠️ 正在以管理员身份代 [{{ formatUserName(lockedTask.assignee_id) || lockedTask.assignee_id }}] 操作</text>
+      </view>
       <view v-if="isAssignee" class="footer-actions">
         <button v-if="lockedTask.status === 'WIP'" class="footer-btn footer-transfer"
           @tap="$emit('action', { task: lockedTask, type: 'transfer' })"><text class="btn-icon">🔄</text><text class="btn-txt">完工转交</text></button>
@@ -111,6 +114,7 @@ export default {
     product: { type: Object, default: null },
     currentUserId: { type: String, default: "" },
     currentUsername: { type: String, default: "" },
+    currentUserRole: { type: String, default: "" },
     initialLockTaskId: { type: String, default: "" },
   },
   emits: ["action", "viewRecords"],
@@ -162,9 +166,22 @@ export default {
       return result;
     },
     lockedTask() { return this.focusTasks.find(t => t.id === this.lockedTaskId) || null; },
-    isAssignee() { if (!this.lockedTask) return false; return this.lockedTask.assignee_id == this.currentUserId || this.lockedTask.assignee_id == this.currentUsername; },
+    isAdmin() { return this.currentUserRole === 'SUPER_ADMIN' || this.currentUserRole === 'SUPERVISOR'; },
+    isAssignee() {
+      if (!this.lockedTask) return false;
+      if (this.isAdmin) return true;  // 管理员上帝视角
+      return this.lockedTask.assignee_id == this.currentUserId
+          || this.lockedTask.assignee_id == this.currentUsername;
+    },
+    isAdminProxy() {
+      // 管理员正在代操作非本人任务
+      return this.isAdmin && this.lockedTask
+        && this.lockedTask.assignee_id != this.currentUserId
+        && this.lockedTask.assignee_id != this.currentUsername;
+    },
     canRecall() {
       if (!this.lockedTask || this.lockedTask.status !== 'PENDING') return false;
+      if (this.isAdmin) return true;  // 管理员可撤回任何转交
       if (this.isAssignee) return false;
       if (!this.lockedTask.parent_task_id) return false;
       const parent = this.taskMap[this.lockedTask.parent_task_id];
@@ -281,6 +298,8 @@ export default {
 .btn-icon { font-size: 36rpx; margin-bottom: 6rpx; }
 .btn-txt { font-size: 24rpx; font-weight: 700; }
 .footer-readonly { justify-content: center; background: #fef2f2; }
+.admin-proxy-notice { padding: 10rpx 20rpx; background: #fef9e7; border-top: 2rpx solid #fde68a; flex-shrink: 0; }
+.proxy-text { font-size: 22rpx; color: #b45309; font-weight: 600; }
 .readonly-hint { font-size: 24rpx; color: #dc2626; font-weight: 600; }
 .footer-transfer { background: #dcfce7; color: #16a34a; }
 .footer-record { background: #eff6ff; color: #2563eb; }

track-uniapp/src/pages/scan/detail.vue

@@ -46,6 +46,7 @@
       <!-- 工作区视图 -->
       <WorkspaceArea v-if="currentMode === 'workspace'" :product="product"
         :currentUserId="currentUserId" :currentUsername="currentUsername"
+        :currentUserRole="currentUserRole"
         :initialLockTaskId="autoLockTaskId"
         :key="'wa-' + dictVersion"
         @action="handleTaskAction" @viewRecords="handleViewRecords" />
@@ -218,7 +219,7 @@ export default {
       users: [], TASK_NAME_OPTIONS,
       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: "", currentMode: "workspace", autoLockTaskId: "",
+      currentUser: null, currentUserId: "", currentUsername: "", currentUserRole: "", currentMode: "workspace", autoLockTaskId: "",
       processOptions: [], userOptions: [],
       actionPopup: { visible: false, type: "", task: null }, actionLoading: false, rejectReason: "", receiveRemark: "", receiveTaskName: "",
       transferForm: { selectedUserId: "", isWarehouse: false, note: "" },
@@ -302,7 +303,7 @@ export default {
     async doEditProduct() { this.editSaving = true; try { this.product = await patch(`/products/${this.product.id}`, { order_no: this.editForm.order_no.trim(), external_serial: this.editForm.external_serial.trim() }); uni.showToast({ title: "已保存", icon: "success" }); this.editProductVisible = false; } catch {} finally { this.editSaving = false; } },
 
     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 || ""; } } catch {} },
+    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]; },
     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})`; } },