添加管理员逻辑

miniprogram/pages/admin/admin.ts

@@ -195,9 +195,10 @@ Page({
   },
 
   // 获取员工状态对应的图标
-  getStaffStatusIcon(_status: string): string {
-    // 统一使用trucks.png作为货运人员图标
-    return '/images/trucks.png';
+  getStaffStatusIcon(staff: any): string {
+    // 根据员工角色返回不同的图标
+    const userRole = staff?.role || 'employee';
+    return userRole === 'ADMIN' ? '/images/crown.png' : '/images/truck.png';
   },
 
   // 获取状态文本
@@ -569,5 +570,17 @@ Page({
       const minute = date.getMinutes();
       return `${month}月${day}日 ${hour}:${minute < 10 ? '0' + minute : minute}`;
     }
+  },
+
+  // 返回上一页
+  goBack() {
+    // 尝试使用navigateBack，如果失败则使用redirectTo返回首页
+    wx.navigateBack({
+      fail: () => {
+        wx.redirectTo({
+          url: '/pages/index/index'
+        });
+      }
+    });
   }
 });

miniprogram/pages/admin/admin.wxml

@@ -2,7 +2,12 @@
 <view class="admin-container">
   <!-- 顶部导航栏 -->
   <view class="top-nav">
-    <text class="nav-title">配送管理系统</text>
+    <view class="header-left">
+      <view class="back-icon" bindtap="goBack">
+        <text class="back-arrow">‹</text>
+      </view>
+      <text class="nav-title">配送管理系统</text>
+    </view>
     <view class="user-info" wx:if="{{userInfo}}">
       <image class="user-avatar" src="/images/user-avatar.png" mode="aspectFill"></image>
       <text class="user-name">{{userInfo.name || '管理员'}}</text>

miniprogram/pages/admin/admin.wxss

@@ -20,11 +20,39 @@
   box-shadow: 0 2rpx 10rpx rgba(0, 0, 0, 0.1);
 }
 
+.header-left {
+  display: flex;
+  align-items: center;
+  gap: 20rpx;
+}
+
 .nav-title {
   font-size: 36rpx;
   font-weight: bold;
 }
 
+/* 微信风格返回按钮 */
+.back-icon {
+  width: 60rpx;
+  height: 60rpx;
+  border-radius: 50%;
+  background-color: rgba(255, 255, 255, 0.2);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: background-color 0.3s;
+}
+
+.back-icon:active {
+  background-color: rgba(255, 255, 255, 0.4);
+}
+
+.back-arrow {
+  font-size: 36rpx;
+  font-weight: bold;
+  color: white;
+}
+
 .user-info {
   display: flex;
   align-items: center;