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

app/api/db/users/route.ts

@@ -0,0 +1,114 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { userDB } from '@/lib/db'
+
+// 获取所有用户
+export async function GET(req: NextRequest) {
+  try {
+    const { searchParams } = new URL(req.url)
+    const id = searchParams.get('id')
+    const phone = searchParams.get('phone')
+
+    if (id) {
+      const user = await userDB.getById(id)
+      return NextResponse.json({ success: true, user })
+    }
+
+    if (phone) {
+      const user = await userDB.getByPhone(phone)
+      return NextResponse.json({ success: true, user })
+    }
+
+    const users = await userDB.getAll()
+    return NextResponse.json({ success: true, users })
+  } catch (error: any) {
+    console.error('Get users error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}
+
+// 创建用户
+export async function POST(req: NextRequest) {
+  try {
+    const body = await req.json()
+    const { phone, nickname, password, referral_code, referred_by } = body
+
+    // 检查手机号是否已存在
+    const existing = await userDB.getByPhone(phone)
+    if (existing) {
+      return NextResponse.json({ 
+        success: false, 
+        error: '该手机号已注册' 
+      }, { status: 400 })
+    }
+
+    const user = await userDB.create({
+      id: `user_${Date.now()}`,
+      phone,
+      nickname,
+      password,
+      referral_code: referral_code || `REF${Date.now().toString(36).toUpperCase()}`,
+      referred_by
+    })
+
+    return NextResponse.json({ success: true, user })
+  } catch (error: any) {
+    console.error('Create user error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}
+
+// 更新用户
+export async function PUT(req: NextRequest) {
+  try {
+    const body = await req.json()
+    const { id, ...updates } = body
+
+    if (!id) {
+      return NextResponse.json({ 
+        success: false, 
+        error: '缺少用户ID' 
+      }, { status: 400 })
+    }
+
+    await userDB.update(id, updates)
+    const user = await userDB.getById(id)
+    
+    return NextResponse.json({ success: true, user })
+  } catch (error: any) {
+    console.error('Update user error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}
+
+// 删除用户
+export async function DELETE(req: NextRequest) {
+  try {
+    const { searchParams } = new URL(req.url)
+    const id = searchParams.get('id')
+
+    if (!id) {
+      return NextResponse.json({ 
+        success: false, 
+        error: '缺少用户ID' 
+      }, { status: 400 })
+    }
+
+    await userDB.delete(id)
+    return NextResponse.json({ success: true })
+  } catch (error: any) {
+    console.error('Delete user error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}