docs: 更新服务验货文案及毕业季快递配送提示

- 统一将全页面的“72小时验”替换为“5天验”
- 调整图书订单页面快递配置：添加毕业季配送提示，设置默认快递为德邦，注释旧的快递选择说明

pages-home/pages/book-order.vue

@@ -72,7 +72,8 @@
                     <u-icon name="arrow-right" :size="28" color="#666" top="3"></u-icon>
                 </view>
             </view>
-            <view class="express-desc">请从【顺丰】或【京东】中选择可正常收寄的快递，如您不选择，则由系统根据区域情况自动分配</view>
+            <!-- <view class="express-desc">请从【顺丰】或【京东】中选择可正常收寄的快递，如您不选择，则由系统根据区域情况自动分配</view> -->
+             <view class="express-desc">毕业季暂不支持自助选择快递，默认德邦快递，如需备注请联系在线客服</view>
         </view>
 
         <!-- 书籍列表 -->
@@ -146,12 +147,11 @@
                 defaultAddr: {},
 
                 submitData: {
-                    expressDelivery: "",
+                    expressDelivery: "德邦",
                     orderId: "",
                     addressId: "",
                     schedulePickupStartTime: "",
                     schedulePickupEndTime: "",
-                    expressDelivery: "",
                     remark: "",
                     verifyPeriodDays: null,
                 },

pages-mine/components/service-promise.vue

@@ -7,7 +7,7 @@
         </view>
         <view class="promise-item">
             <u-icon name="clock-fill" color="#FFFFFF" size="32"></u-icon>
-            <text>72小时验</text>
+            <text>5天验</text>
         </view>
         <view class="promise-item">
             <u-icon name="yuan-circle-fill" color="#FFFFFF" size="32"></u-icon>

pages/home/components/ServiceGuarantee.vue

@@ -13,13 +13,13 @@
                     <view class="item-desc">本单不合格书籍可免费退回，您可在订单审核完成后，提交申请退回。</view>
                 </view>
 
-                <!-- 72小时验 -->
+                <!-- 5天验 -->
                 <view class="guarantee-item">
                     <view class="item-header">
                         <image src="/static/img/1-2.png" mode="widthFix" class="item-icon"></image>
-                        <text class="item-title">72小时验</text>
+                        <text class="item-title">5天验</text>
                     </view>
-                    <view class="item-desc">本单获得72小时验资格，订单将在"到仓签收"后72小时内验货完毕，未完成验货将获得3元补贴到余额，可随验货书款一起提现。</view>
+                    <view class="item-desc">本单获得5天验资格，订单将在"到仓签收"后72小时内验货完毕，未完成验货将获得3元补贴到余额，可随验货书款一起提现。</view>
                 </view>
 
                 <!-- 极速打款 -->

pages/home/components/ServiceInfo.vue

@@ -54,7 +54,7 @@ export default {
             const days = Number(this.verifyPeriodDays)
             if (days === 7) return '7天验'
             if (days === 15) return '15天验'
-            return '72小时验'
+            return '5天验'
         },
     },
     data() {
@@ -66,7 +66,7 @@ export default {
                 },
                 {
                     icon: "/static/img/2.png",
-                    text: "72小时验",
+                    text: "5天验",
                 },
                 {
                     icon: "/static/img/3.png",