refactor: 重命名 customer-mobile 为 cashier-customer

统一收银相关项目命名：
- cashier-mobile: 收银端（店员使用）
- cashier-customer: 顾客端（顾客使用）

更新所有相关配置和引用

cashier-customer/pages/index/index.vue

@@ -0,0 +1,80 @@
+<template>
+  <view class="container">
+    <view class="header">
+      <text class="title">欢迎光临</text>
+    </view>
+    <view class="content">
+      <view class="menu-list">
+        <view v-for="item in menuList" :key="item.id" class="menu-item" @click="goToDetail(item)">
+          <image :src="item.image" class="menu-image" mode="aspectFill" />
+          <text class="menu-name">{{ item.name }}</text>
+          <text class="menu-price">¥{{ item.price }}</text>
+        </view>
+      </view>
+    </view>
+  </view>
+</template>
+
+<script setup>
+import { ref } from 'vue'
+
+const menuList = ref([
+  { id: 1, name: '招牌奶茶', price: '18.00', image: '/static/logo.png' },
+  { id: 2, name: '美式咖啡', price: '22.00', image: '/static/logo.png' },
+  { id: 3, name: '芝士蛋糕', price: '28.00', image: '/static/logo.png' }
+])
+
+const goToDetail = (item) => {
+  uni.navigateTo({
+    url: `/pages/order/order?id=${item.id}`
+  })
+}
+</script>
+
+<style scoped>
+.container {
+  padding: 20rpx;
+}
+
+.header {
+  text-align: center;
+  margin-bottom: 40rpx;
+}
+
+.title {
+  font-size: 36rpx;
+  font-weight: bold;
+}
+
+.menu-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 20rpx;
+}
+
+.menu-item {
+  width: calc(50% - 10rpx);
+  background: #fff;
+  border-radius: 12rpx;
+  overflow: hidden;
+  box-shadow: 0 2rpx 10rpx rgba(0,0,0,0.1);
+}
+
+.menu-image {
+  width: 100%;
+  height: 200rpx;
+}
+
+.menu-name {
+  display: block;
+  padding: 10rpx;
+  font-size: 28rpx;
+}
+
+.menu-price {
+  display: block;
+  padding: 0 10rpx 10rpx;
+  color: #ff0000;
+  font-weight: bold;
+}
+</style>