增加小程序，修改游戏前端

games/minipro/calculation/miniprogram/pages/random-draw/random-draw.json

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+{
+  "usingComponents": {},
+  "navigationBarTitleText": "谁去拿外卖"
+}

games/minipro/calculation/miniprogram/pages/random-draw/random-draw.ts

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+
+Page({
+  data: {
+    names: [] as string[],
+    newName: '',
+    result: '',
+    isRolling: false
+  },
+
+  onLoad() {
+      // Initialize with some default placeholder data optionally, or keep empty
+      // this.setData({ names: ['张三', '李四', '王五'] });
+  },
+
+  onInput(e: any) {
+    this.setData({ newName: e.detail.value });
+  },
+
+  addName() {
+    const name = this.data.newName.trim();
+    if (!name) {
+        wx.showToast({ title: '请输入名字', icon: 'none' });
+        return;
+    }
+    
+    // Check duplication
+    if (this.data.names.includes(name)) {
+       wx.showToast({ title: '名字已存在', icon: 'none' });
+       return;
+    }
+    
+    const names = [...this.data.names, name];
+    this.setData({ names, newName: '' });
+  },
+
+  removeName(e: any) {
+    if (this.data.isRolling) return;
+    
+    const index = e.currentTarget.dataset.index;
+    const names = [...this.data.names];
+    names.splice(index, 1);
+    this.setData({ names });
+    
+    // If deleted the current result, clear result
+    if (this.data.names.indexOf(this.data.result) === -1) {
+        // actually result is a string copy, but if logic requires reset:
+        // this.setData({ result: '' });
+    }
+  },
+
+  startDraw() {
+    if (this.data.isRolling) return;
+    
+    const names = this.data.names;
+    if (names.length < 2) {
+       wx.showToast({ title: '至少需要两个人才能抽取哦', icon: 'none' });
+       return;
+    }
+    
+    this.setData({ isRolling: true, result: '' });
+    
+    let count = 0;
+    // Speed up first then slow down? Or simple uniform interval.
+    // Let's do a simple one first.
+    let baseInterval = 50;
+    let totalRolls = 30;
+    
+    const roll = () => {
+        const randomIndex = Math.floor(Math.random() * names.length);
+        this.setData({ result: names[randomIndex] });
+        
+        count++;
+        if (count < totalRolls) {
+            // dynamic interval could be fun, but keeping it simple for now
+            setTimeout(roll, baseInterval + (count * 5)); // slowing down
+        } else {
+            this.setData({ isRolling: false });
+            wx.vibrateShort({ type: 'heavy' }); 
+        }
+    };
+    
+    roll();
+  }
+});

games/minipro/calculation/miniprogram/pages/random-draw/random-draw.wxml

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+<view class="container">
+  <view class="header-tip">
+    <text>输入名字，看看今天谁是天选打工人</text>
+  </view>
+
+  <view class="input-area">
+    <input class="input" placeholder="输入名字 (如: 小明)" value="{{newName}}" bindinput="onInput" bindconfirm="addName" />
+    <view class="btn-add" bindtap="addName">添加</view>
+  </view>
+
+  <scroll-view scroll-y class="list-area">
+    <view class="name-list">
+      <block wx:for="{{names}}" wx:key="*this">
+        <view class="name-item">
+          <text class="name-text">{{item}}</text>
+          <view class="btn-delete" bindtap="removeName" data-index="{{index}}">×</view>
+        </view>
+      </block>
+      <view wx:if="{{names.length === 0}}" class="empty-tip">
+        <text>还没有候选人，快去添加吧</text>
+      </view>
+    </view>
+  </scroll-view>
+
+  <view class="result-area">
+    <view class="result-box {{isRolling ? 'rolling' : ''}}">
+      <text class="result-text">{{result || '?'}}</text>
+    </view>
+    <button class="btn-start" bindtap="startDraw" disabled="{{isRolling || names.length < 2}}">
+        {{isRolling ? '随机抽取中...' : '开始抽取'}}
+    </button>
+  </view>
+</view>

games/minipro/calculation/miniprogram/pages/random-draw/random-draw.wxss

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+page {
+  background-color: #f6f7f9;
+  height: 100%;
+}
+
+.container {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+  padding: 20px;
+  box-sizing: border-box;
+}
+
+.header-tip {
+  text-align: center;
+  margin-bottom: 20px;
+  color: #666;
+  font-size: 14px;
+}
+
+.input-area {
+  display: flex;
+  margin-bottom: 20px;
+  background: #fff;
+  border-radius: 50px;
+  padding: 5px;
+  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
+}
+
+.input {
+  flex: 1;
+  height: 40px;
+  padding: 0 20px;
+  font-size: 16px;
+}
+
+.btn-add {
+  width: 80px;
+  height: 40px;
+  line-height: 40px;
+  text-align: center;
+  background: #9c27b0;
+  color: #fff;
+  border-radius: 40px;
+  font-size: 14px;
+  font-weight: bold;
+}
+
+.list-area {
+    flex: 1;
+    background: #fff;
+    border-radius: 12px;
+    padding: 10px;
+    margin-bottom: 20px;
+    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
+    overflow: hidden;
+}
+
+.name-list {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px;
+    padding: 10px;
+}
+
+.name-item {
+    background: #f3e5f5;
+    color: #4a148c;
+    padding: 8px 16px;
+    border-radius: 20px;
+    font-size: 14px;
+    display: flex;
+    align-items: center;
+    position: relative;
+}
+
+.name-text {
+    margin-right: 15px;
+}
+
+.btn-delete {
+    width: 20px;
+    height: 20px;
+    line-height: 18px;
+    text-align: center;
+    border-radius: 50%;
+    background: rgba(0,0,0,0.1);
+    color: #4a148c;
+    font-size: 16px;
+    position: absolute;
+    right: 5px;
+    top: 50%;
+    transform: translateY(-50%);
+}
+
+.empty-tip {
+    width: 100%;
+    text-align: center;
+    color: #999;
+    padding-top: 50px;
+}
+
+.result-area {
+    height: 200px;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+}
+
+.result-box {
+    width: 120px;
+    height: 120px;
+    border-radius: 50%;
+    background: #fff;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    margin-bottom: 20px;
+    border: 5px solid #e1bee7;
+    box-shadow: 0 4px 15px rgba(156, 39, 176, 0.2);
+    transition: all 0.1s;
+}
+
+.result-box.rolling {
+    transform: scale(1.1);
+    border-color: #9c27b0;
+}
+
+.result-text {
+    font-size: 24px;
+    font-weight: bold;
+    color: #333;
+    /* Prevent long names from overflowing */
+    max-width: 90%;
+    overflow: hidden;
+    white-space: nowrap;
+    text-overflow: ellipsis;
+}
+
+.btn-start {
+    width: 80% !important;
+    background: linear-gradient(135deg, #ab47bc 0%, #8e24aa 100%);
+    color: #fff;
+    border-radius: 30px;
+    padding: 12px 0;
+    font-size: 18px;
+    box-shadow: 0 4px 15px rgba(142, 36, 170, 0.4);
+}
+
+.btn-start[disabled] {
+    opacity: 0.7;
+    background: #ccc; 
+    box-shadow: none;
+}