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/chapters/page.tsx

@@ -2,17 +2,21 @@
 
 import { useState } from "react"
 import { useRouter } from "next/navigation"
-import { ChevronRight, Lock, Unlock, Book, BookOpen, Home, List, Sparkles, User } from "lucide-react"
+import { ChevronRight, Lock, Unlock, Book, BookOpen, Home, List, Sparkles, User, Users, Zap, Crown } from "lucide-react"
 import { useStore } from "@/lib/store"
-import { bookData, getTotalSectionCount, specialSections } from "@/lib/book-data"
+import { bookData, getTotalSectionCount, specialSections, getPremiumBookPrice, getExtraSectionsCount, BASE_SECTIONS_COUNT } from "@/lib/book-data"
 
 export default function ChaptersPage() {
   const router = useRouter()
   const { user, hasPurchased } = useStore()
   const [expandedPart, setExpandedPart] = useState<string | null>("part-1")
+  const [bookVersion, setBookVersion] = useState<"basic" | "premium">("basic")
+  const [showPremiumTab, setShowPremiumTab] = useState(false) // 控制是否显示最新完整版标签
 
   const totalSections = getTotalSectionCount()
   const hasFullBook = user?.hasFullBook || false
+  const premiumPrice = getPremiumBookPrice()
+  const extraSections = getExtraSectionsCount()
 
   const handleSectionClick = (sectionId: string) => {
     router.push(`/read/${sectionId}`)
@@ -41,6 +45,33 @@ export default function ChaptersPage() {
           </div>
         </div>
       </div>
+      
+      {/* 版本标签切换 - 仅在showPremiumTab为true时显示 */}
+      {showPremiumTab && extraSections > 0 && (
+        <div className="mx-4 mt-3 flex gap-2">
+          <button
+            onClick={() => setBookVersion("basic")}
+            className={`flex-1 py-2.5 rounded-xl text-sm font-medium transition-all ${
+              bookVersion === "basic"
+                ? "bg-[#00CED1]/20 text-[#00CED1] border border-[#00CED1]/30"
+                : "bg-[#1c1c1e] text-white/60 border border-white/5"
+            }`}
+          >
+            基础版 ¥9.9
+          </button>
+          <button
+            onClick={() => setBookVersion("premium")}
+            className={`flex-1 py-2.5 rounded-xl text-sm font-medium transition-all flex items-center justify-center gap-1 ${
+              bookVersion === "premium"
+                ? "bg-[#FFD700]/20 text-[#FFD700] border border-[#FFD700]/30"
+                : "bg-[#1c1c1e] text-white/60 border border-white/5"
+            }`}
+          >
+            <Crown className="w-4 h-4" />
+            最新版 ¥{premiumPrice.toFixed(1)}
+          </button>
+        </div>
+      )}
 
       {/* 目录内容 */}
       <main className="px-4 py-4">
@@ -177,12 +208,12 @@ export default function ChaptersPage() {
               <List className="w-5 h-5 text-[#00CED1] mb-1" />
               <span className="text-[#00CED1] text-xs font-medium">目录</span>
             </button>
-            {/* 匹配按钮 - 更大更突出 */}
+            {/* 找伙伴按钮 */}
             <button onClick={() => router.push("/match")} className="flex flex-col items-center py-2 px-6 -mt-4">
               <div className="w-14 h-14 rounded-full bg-gradient-to-br from-[#00CED1] to-[#20B2AA] flex items-center justify-center shadow-lg shadow-[#00CED1]/30">
-                <Sparkles className="w-6 h-6 text-white" />
+                <Users className="w-7 h-7 text-white" />
               </div>
-              <span className="text-gray-500 text-xs mt-1">匹配</span>
+              <span className="text-gray-500 text-xs mt-1">找伙伴</span>
             </button>
             <button onClick={() => router.push("/my")} className="flex flex-col items-center py-2 px-4">
               <User className="w-5 h-5 text-gray-500 mb-1" />