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/book/route.ts

@@ -0,0 +1,194 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { bookDB } from '@/lib/db'
+import { bookData } from '@/lib/book-data'
+import fs from 'fs/promises'
+import path from 'path'
+
+// 获取章节
+export async function GET(req: NextRequest) {
+  try {
+    const { searchParams } = new URL(req.url)
+    const id = searchParams.get('id')
+    const action = searchParams.get('action')
+
+    // 导出所有章节
+    if (action === 'export') {
+      const data = await bookDB.exportAll()
+      return new NextResponse(data, {
+        headers: {
+          'Content-Type': 'application/json',
+          'Content-Disposition': 'attachment; filename=book_sections.json'
+        }
+      })
+    }
+
+    // 从文件系统读取章节内容
+    if (action === 'read' && id) {
+      // 查找章节文件路径
+      let filePath = ''
+      for (const part of bookData) {
+        for (const chapter of part.chapters) {
+          const section = chapter.sections.find(s => s.id === id)
+          if (section) {
+            filePath = section.filePath
+            break
+          }
+        }
+        if (filePath) break
+      }
+
+      if (!filePath) {
+        return NextResponse.json({ 
+          success: false, 
+          error: '章节不存在' 
+        }, { status: 404 })
+      }
+
+      const fullPath = path.join(process.cwd(), filePath)
+      const content = await fs.readFile(fullPath, 'utf-8')
+      
+      return NextResponse.json({ 
+        success: true, 
+        section: { id, filePath, content } 
+      })
+    }
+
+    if (id) {
+      const section = await bookDB.getSection(id)
+      return NextResponse.json({ success: true, section })
+    }
+
+    const sections = await bookDB.getAllSections()
+    return NextResponse.json({ success: true, sections })
+  } catch (error: any) {
+    console.error('Get book sections error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}
+
+// 创建或更新章节
+export async function POST(req: NextRequest) {
+  try {
+    const body = await req.json()
+    const { action, data } = body
+
+    // 导入章节
+    if (action === 'import') {
+      const count = await bookDB.importSections(JSON.stringify(data))
+      return NextResponse.json({ 
+        success: true, 
+        message: `成功导入 ${count} 个章节` 
+      })
+    }
+
+    // 同步book-data到数据库
+    if (action === 'sync') {
+      let count = 0
+      let sortOrder = 0
+      
+      for (const part of bookData) {
+        for (const chapter of part.chapters) {
+          for (const section of chapter.sections) {
+            sortOrder++
+            const existing = await bookDB.getSection(section.id)
+            
+            // 读取文件内容
+            let content = ''
+            try {
+              const fullPath = path.join(process.cwd(), section.filePath)
+              content = await fs.readFile(fullPath, 'utf-8')
+            } catch (e) {
+              console.warn(`Cannot read file: ${section.filePath}`)
+            }
+
+            if (existing) {
+              await bookDB.updateSection(section.id, {
+                title: section.title,
+                content,
+                price: section.price,
+                is_free: section.isFree
+              })
+            } else {
+              await bookDB.createSection({
+                id: section.id,
+                part_id: part.id,
+                chapter_id: chapter.id,
+                title: section.title,
+                content,
+                price: section.price,
+                is_free: section.isFree,
+                sort_order: sortOrder
+              })
+            }
+            count++
+          }
+        }
+      }
+
+      return NextResponse.json({ 
+        success: true, 
+        message: `成功同步 ${count} 个章节到数据库` 
+      })
+    }
+
+    // 创建单个章节
+    const section = await bookDB.createSection(data)
+    return NextResponse.json({ success: true, section })
+  } catch (error: any) {
+    console.error('Create/Import book section error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}
+
+// 更新章节
+export async function PUT(req: NextRequest) {
+  try {
+    const body = await req.json()
+    const { id, ...updates } = body
+
+    if (!id) {
+      return NextResponse.json({ 
+        success: false, 
+        error: '缺少章节ID' 
+      }, { status: 400 })
+    }
+
+    // 如果要保存到文件系统
+    if (updates.content && updates.saveToFile) {
+      // 查找章节文件路径
+      let filePath = ''
+      for (const part of bookData) {
+        for (const chapter of part.chapters) {
+          const section = chapter.sections.find(s => s.id === id)
+          if (section) {
+            filePath = section.filePath
+            break
+          }
+        }
+        if (filePath) break
+      }
+
+      if (filePath) {
+        const fullPath = path.join(process.cwd(), filePath)
+        await fs.writeFile(fullPath, updates.content, 'utf-8')
+      }
+    }
+
+    await bookDB.updateSection(id, updates)
+    const section = await bookDB.getSection(id)
+    
+    return NextResponse.json({ success: true, section })
+  } catch (error: any) {
+    console.error('Update book section error:', error)
+    return NextResponse.json({ 
+      success: false, 
+      error: error.message 
+    }, { status: 500 })
+  }
+}