重构小程序图标组件，替换传统 emoji 为 SVG 图标，提升视觉一致性和可维护性。更新多个页面以使用新图标组件，优化用户界面体验。同时，调整了数据加载逻辑，确保更高效的状态管理和用户交互。

miniprogram/pages/gift-pay/detail.js

@@ -314,7 +314,7 @@ Page({
   goToArticle() {
     const { detail } = this.data
     if (!detail || detail.productType !== 'section' || !detail.productId) return
-    const mid = detail.productMid || app.getSectionMid?.(detail.productId)
+    const mid = detail.productMid
     const q = mid ? `mid=${mid}` : `id=${detail.productId}`
     wx.navigateTo({ url: `/pages/read/read?${q}` })
   },

miniprogram/pages/gift-pay/detail.wxml

@@ -89,7 +89,7 @@
 
       <!-- 安全徽章（发起人视角不展示） -->
       <view class="security-badge" wx:if="{{!isCreateMode && !isInitiator}}">
-        <text class="security-icon">🛡</text>
+        <icon name="shield" size="40" color="#00CED1" customClass="security-icon"></icon>
         <text class="security-text">安全支付保障 · 资金由平台托管</text>
       </view>
     </block>
@@ -145,7 +145,7 @@
   <view class="modal-overlay" wx:if="{{showLoginModal}}" bindtap="closeLoginModal">
     <view class="modal-content login-modal" catchtap="stopPropagation">
       <view class="modal-close" bindtap="closeLoginModal">✕</view>
-      <view class="login-icon">🔐</view>
+      <view class="login-icon"><icon name="lock" size="80" color="#00CED1"></icon></view>
       <text class="login-title">登录 Soul创业派对</text>
       <text class="login-desc">登录后可免费领取并阅读</text>
       <button class="btn-wechat {{agreeProtocol ? '' : 'btn-wechat-disabled'}}" bindtap="handleWechatLogin" disabled="{{!agreeProtocol}}">