修改小程序目录，删除示例小程序

miniprogram/src/pages/residents/code.config.js

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+export default definePageConfig({
+	navigationBarTitleText: '身份码'
+  })
+  

miniprogram/src/pages/residents/code.css

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+.time-text {
+  font-weight: bold;
+}
+
+#qrcode {
+  width: 70vw;
+  height: 70vw;
+}

miniprogram/src/pages/residents/code.vue

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+<template>
+  <view style="background-color: #F6F6F6;height: 100%;">
+    <image src="../../image/home.jpg" style="width: 100%;height: 130px;"></image>
+  </view>
+  <view style="text-align: center; margin-top: 100px;">
+    <view><text>{{ stuId }} {{ name }}</text></view>
+    <image id="qrcode" src="{{imgUrl}}"></image>
+    <view><text class="time-text">{{ time }}</text></view>
+  </view>
+</template>
+
+<script>
+import './code.css'
+
+export default {
+  data() {
+    return {
+    }
+  }
+}
+</script>