Initial commit

pages/index/index.wxml

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+<!-- index.wxml -->
+<view class="container">
+  <!-- 页面标题 -->
+  <view class="title">OCR识别系统</view>
+  
+  <!-- 中间区域 -->
+  <view class="middle-section">
+    <!-- 中间上半部分：扫码按钮 -->
+    <view class="scan-button-container">
+      <view class="speed-mode-switch">
+        <text class="switch-label">加速模式</text>
+        <switch checked="{{speedMode}}" bindchange="toggleSpeedMode" />
+      </view>
+      <view class="scan-button" bindtap="scanCode">
+        <text class="scan-button-text">扫码</text>
+      </view>
+    </view>
+    
+    <!-- 中间下半部分：图片预览 -->
+    <view class="image-preview-container">
+      <view class="image-preview" wx:if="{{imagePath}}">
+        <image src="{{imagePath}}" mode="aspectFit"></image>
+      </view>
+    </view>
+  </view>
+  
+  <!-- 长形用户认证按钮 -->
+  <view class="auth-button-container">
+    <button class="auth-button" bindtap="userAuth">
+      <text class="auth-button-text">用户认证</text>
+    </button>
+  </view>
+</view>