增加小程序，修改游戏前端

games/minipro/calculation/miniprogram/pages/relative/relative.wxml

@@ -0,0 +1,19 @@
+<view class="container">
+  <view class="display-area">
+    <view class="chain-text">{{screenText}}</view>
+    <view class="result-text">{{resultText}}</view>
+  </view>
+
+  <view class="control-area">
+    <view class="action-bar">
+      <button class="action-btn" bindtap="handleBack">回退</button>
+      <button class="action-btn" bindtap="handleClear">清空</button>
+    </view>
+    
+    <view class="grid-keyboard">
+      <block wx:for="{{buttons}}" wx:key="id">
+        <button class="key-btn" bindtap="handleBtnClick" data-id="{{item.id}}" data-text="{{item.text}}">{{item.text}}</button>
+      </block>
+    </view>
+  </view>
+</view>