feat(ui): 紫色主题完善、抢单端去自动刷新、我的页下拉刷新

Co-authored-by: Cursor <cursoragent@cursor.com>

pages/order-pool/order-pool.wxml

@@ -25,7 +25,7 @@
         class="xym-lunbo-swiper"
         indicator-dots="{{lunboList.length > 1}}"
         indicator-color="rgba(255,255,255,0.6)"
-        indicator-active-color="#ffd061"
+        indicator-active-color="#9333ea"
         autoplay="{{lunboList.length > 1}}"
         interval="4000"
         circular
@@ -75,7 +75,7 @@
         refresher-enabled="{{xuanzhongLeixingId != null}}" 
         refresher-threshold="80"
         refresher-default-style="black"
-        refresher-background="#f5f5f5"
+        refresher-background="#f5f3ff"
         refresher-triggered="{{scrollViewRefreshing}}"
         bindrefresherrefresh="onPullDownRefresh"
         bindscrolltolower="onReachBottom"

pages/order-pool/order-pool.wxss

@@ -64,7 +64,7 @@
     width: 72rpx;
     height: 52rpx;
     margin-bottom: 30rpx;
-    background: linear-gradient(180deg, #fae04d, #ffc0a3);
+    background: linear-gradient(180deg, #c4b5fd, #a78bfa);
     border-radius: 10rpx;
     box-shadow: 0 8rpx 24rpx rgba(180, 130, 20, 0.25);
   }
@@ -77,7 +77,7 @@
     transform: translateX(-50%);
     width: 44rpx;
     height: 36rpx;
-    border: 8rpx solid #ffd061;
+    border: 8rpx solid #9333ea;
     border-bottom: none;
     border-radius: 22rpx 22rpx 0 0;
     box-sizing: border-box;
@@ -96,10 +96,10 @@
   
   .message {
     font-size: 32rpx;
-    color: #ffaa00;
+    color: #9333ea;
     margin-bottom: 16rpx;
     font-weight: 600;
-    text-shadow: 0 0 10rpx #ffaa00;
+    text-shadow: 0 0 10rpx #9333ea;
   }
   
   .description {