feat: 完整重构小程序匹配功能 + 修复UI对齐 + 文章数据API

主要更新:
1. 按H5网页端完全重构匹配功能(match页面)
   - 4种匹配类型: 创业合伙/资源对接/导师顾问/团队招募
   - 资源对接等类型弹出手机号/微信号输入框
   - 去掉重新匹配按钮，改为返回按钮

2. 修复所有卡片对齐和宽度问题
   - 目录页附录卡片居中
   - 首页阅读进度卡片满宽度
   - 我的页面菜单卡片对齐
   - 推广中心分享卡片统一宽度

3. 修复目录页图标和文字对齐
   - section-icon固定40rpx宽高
   - section-title与图标垂直居中

4. 更新真实完整文章标题(62篇)
   - 从book目录读取真实markdown文件名
   - 替换之前的简化标题

5. 新增文章数据API
   - /api/db/chapters - 获取完整书籍结构
   - 支持按ID获取单篇文章内容

miniprogram/pages/purchases/purchases.js

@@ -0,0 +1,45 @@
+/**
+ * Soul创业实验 - 订单页
+ */
+const app = getApp()
+
+Page({
+  data: {
+    statusBarHeight: 44,
+    orders: [],
+    loading: true
+  },
+
+  onLoad() {
+    this.setData({ statusBarHeight: app.globalData.statusBarHeight })
+    this.loadOrders()
+  },
+
+  async loadOrders() {
+    this.setData({ loading: true })
+    try {
+      // 模拟订单数据
+      const purchasedSections = app.globalData.purchasedSections || []
+      const orders = purchasedSections.map((id, index) => ({
+        id: `order_${index}`,
+        sectionId: id,
+        title: `章节 ${id}`,
+        amount: 1,
+        status: 'completed',
+        createTime: new Date(Date.now() - index * 86400000).toLocaleDateString()
+      }))
+      this.setData({ orders })
+    } catch (e) {
+      console.error('加载订单失败:', e)
+    } finally {
+      this.setData({ loading: false })
+    }
+  },
+
+  goToRead(e) {
+    const id = e.currentTarget.dataset.id
+    wx.navigateTo({ url: `/pages/read/read?id=${id}` })
+  },
+
+  goBack() { wx.navigateBack() }
+})

miniprogram/pages/purchases/purchases.json

@@ -0,0 +1,4 @@
+{
+  "usingComponents": {},
+  "navigationStyle": "custom"
+}

miniprogram/pages/purchases/purchases.wxml

@@ -0,0 +1,35 @@
+<!--订单页-->
+<view class="page">
+  <view class="nav-bar" style="padding-top: {{statusBarHeight}}px;">
+    <view class="nav-back" bindtap="goBack">←</view>
+    <text class="nav-title">我的订单</text>
+    <view class="nav-placeholder"></view>
+  </view>
+  <view style="height: {{statusBarHeight + 44}}px;"></view>
+
+  <view class="content">
+    <view class="loading" wx:if="{{loading}}">
+      <view class="skeleton"></view>
+      <view class="skeleton"></view>
+      <view class="skeleton"></view>
+    </view>
+
+    <view class="orders-list" wx:elif="{{orders.length > 0}}">
+      <view class="order-item" wx:for="{{orders}}" wx:key="id" bindtap="goToRead" data-id="{{item.sectionId}}">
+        <view class="order-info">
+          <text class="order-title">{{item.title}}</text>
+          <text class="order-time">{{item.createTime}}</text>
+        </view>
+        <view class="order-right">
+          <text class="order-amount">¥{{item.amount}}</text>
+          <text class="order-status">已完成</text>
+        </view>
+      </view>
+    </view>
+
+    <view class="empty" wx:else>
+      <text class="empty-icon">📦</text>
+      <text class="empty-text">暂无订单</text>
+    </view>
+  </view>
+</view>

miniprogram/pages/purchases/purchases.wxss

@@ -0,0 +1,21 @@
+.page { min-height: 100vh; background: #000; }
+.nav-bar { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(0,0,0,0.9); backdrop-filter: blur(40rpx); display: flex; align-items: center; justify-content: space-between; padding: 0 32rpx; height: 88rpx; }
+.nav-back { width: 72rpx; height: 72rpx; background: #1c1c1e; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32rpx; color: #fff; }
+.nav-title { font-size: 36rpx; font-weight: 600; color: #00CED1; }
+.nav-placeholder { width: 72rpx; }
+.content { padding: 32rpx; }
+.loading { display: flex; flex-direction: column; gap: 24rpx; }
+.skeleton { height: 120rpx; background: linear-gradient(90deg, #1c1c1e 25%, #2c2c2e 50%, #1c1c1e 75%); background-size: 200% 100%; animation: skeleton 1.5s ease-in-out infinite; border-radius: 24rpx; }
+@keyframes skeleton { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
+.orders-list { display: flex; flex-direction: column; gap: 16rpx; }
+.order-item { display: flex; align-items: center; justify-content: space-between; padding: 24rpx; background: #1c1c1e; border-radius: 24rpx; }
+.order-item:active { background: #2c2c2e; }
+.order-info { flex: 1; }
+.order-title { font-size: 28rpx; color: #fff; display: block; margin-bottom: 8rpx; }
+.order-time { font-size: 22rpx; color: rgba(255,255,255,0.4); }
+.order-right { text-align: right; }
+.order-amount { font-size: 28rpx; font-weight: 600; color: #00CED1; display: block; margin-bottom: 4rpx; }
+.order-status { font-size: 22rpx; color: rgba(255,255,255,0.4); }
+.empty { display: flex; flex-direction: column; align-items: center; padding: 96rpx; }
+.empty-icon { font-size: 96rpx; margin-bottom: 24rpx; opacity: 0.5; }
+.empty-text { font-size: 28rpx; color: rgba(255,255,255,0.4); }