feat(单次洗车): 实现单次洗车功能并优化界面样式

- 新增单次洗车页面，包含金额选择、协议勾选和注意事项
- 调整首页扫码启动按钮为单次启动和余额启动双按钮
- 优化单次洗车页面样式和交互逻辑
- 移除首页单次消费弹窗及相关逻辑

pages/index/index.wxml

@@ -6,35 +6,19 @@
     <view class="money">
         <my-money user="{{user}}"></my-money>
         <view class="marquee-wrap" wx:if="{{notice}}">
-            <view bindtap="toPage" class="marquee-content" data-refresh="1" data-url="{{noticeurl}}">
-                {{notice}}
-            </view>
+            <view bindtap="toPage" class="marquee-content" data-refresh="1" data-url="{{noticeurl}}"> {{notice}} </view>
         </view>
-        <navigator class="washing" hoverClass="hover" url="/pages/washing/washing" wx:if="{{user.progressorder}}">
-            <view class="l">您有一笔洗车订单进行中...</view>
-            <view class="r">点击查看></view>
-        </navigator>
     </view>
     <template is="pageList" data="{{urlList:urlList}}"></template>
     <template is="wangdianList" data="{{wangdianList:wangdianList}}"></template>
     <service-tel></service-tel>
-    <view bindtap="toScan" class="scan-btn" wx:if="{{!isScan}}">
-        <view class="sha">扫码启动</view>
+    <view bindtap="toScan" class="scan-btn" wx:if="{{!isScan}}"><view class="sha">扫码启动</view></view>
+    <view class="scan-btn two-btn" wx:if="{{isScan}}">
+      <view bindtap="toPage" data-needlogin="true" data-refresh="" data-showimg="" data-url="singleStart/singleStart" class="two-btns danci">
+        <view>单次启动</view>
+      </view>
+      <view bindtap="toStart" class="two-btns yue">
+        <view>余额启动</view>
+      </view>
     </view>
-    <view bindtap="toStart" class="scan-btn" wx:if="{{isScan}}">
-        <view class="sha">立即启动</view>
-    </view>
-    <view class="one-time-modal" wx:if="{{showOneTimeOptions}}">
-        <view class="one-time-inner">
-            <view class="one-time-title">选择单次消费档位</view>
-            <view class="one-time-tip">限单次洗车</view>
-            <view class="one-time-list">
-                <view class="one-time-item" wx:for="{{oneTimeOptions}}" wx:key="index" bindtap="payOneTime" data-token="{{item.token}}">
-                    <view>{{item.title}}</view>
-                    <view>支付{{item.actualprice}}元 · 洗车时间最长{{item.usetime}}分钟</view>
-                </view>
-            </view>
-            <view bindtap="closeOneTimeOptions" class="one-time-cancel">取消</view>
-        </view>
-    </view>
-</view>
+</view>