更新小程序配置，重构页面结构，删除不再使用的地址管理和章节页面，优化项目结构以提升可维护性；调整全局样式，增强组件的可复用性和一致性。

miniprogram/pages/purchases/purchases.js

@@ -1,105 +0,0 @@
-const app = getApp()
-
-function flattenSections(bookData) {
-  if (!bookData || !Array.isArray(bookData)) return []
-  const out = []
-  bookData.forEach(part => {
-    if (!part.chapters || !Array.isArray(part.chapters)) return
-    part.chapters.forEach(ch => {
-      if (!ch.sections || !Array.isArray(ch.sections)) return
-      ch.sections.forEach(sec => {
-        out.push({ id: sec.id, title: sec.title || sec.id })
-      })
-    })
-  })
-  return out
-}
-
-Page({
-  data: {
-    statusBarHeight: 44,
-    navBarHeight: 88,
-    isLoggedIn: false,
-    user: null,
-    hasFullBook: false,
-    purchasedSections: [],
-    purchasedSectionList: [],
-    purchasedCount: 0,
-    totalSections: 62,
-    sectionList: [],
-    loading: true
-  },
-
-  onLoad() {
-    const statusBarHeight = app.globalData.statusBarHeight || 44
-    const navBarHeight = app.globalData.navBarHeight || (statusBarHeight + 44)
-    this.setData({ statusBarHeight, navBarHeight })
-    this.syncUser()
-    this.loadBookData()
-  },
-
-  onShow() {
-    this.syncUser()
-  },
-
-  syncUser() {
-    const isLoggedIn = !!app.globalData.isLoggedIn
-    const user = app.globalData.userInfo || null
-    const hasFullBook = !!app.globalData.hasFullBook
-    const purchasedSections = app.globalData.purchasedSections || []
-    const total = this.data.totalSections || 62
-    const purchasedCount = hasFullBook ? total : purchasedSections.length
-    const sectionList = this.data.sectionList || []
-    const purchasedSectionList = sectionList.filter(s => purchasedSections.indexOf(s.id) >= 0)
-    this.setData({
-      isLoggedIn,
-      user,
-      hasFullBook,
-      purchasedSections,
-      purchasedCount,
-      purchasedSectionList
-    })
-  },
-
-  loadBookData() {
-    const bookData = app.globalData.bookData
-    if (bookData && Array.isArray(bookData)) {
-      const sectionList = flattenSections(bookData)
-      const totalSections = sectionList.length || 62
-      this.setData({ sectionList, totalSections, loading: false })
-      this.syncUser()
-      return
-    }
-    app.request('/api/book/all-chapters').then(res => {
-      const raw = (res && res.data) ? res.data : (res && res.chapters) ? res.chapters : []
-      const totalSections = res.totalSections || res.total || raw.length || 62
-      let sectionList = []
-      if (Array.isArray(raw)) {
-        raw.forEach(s => {
-          sectionList.push({
-            id: s.id,
-            title: s.sectionTitle || s.title || s.section_title || s.id
-          })
-        })
-      }
-      if (sectionList.length === 0 && raw.length > 0) {
-        sectionList = raw.map(s => ({ id: s.id, title: s.sectionTitle || s.title || s.id }))
-      }
-      this.setData({ sectionList, totalSections, loading: false })
-      this.syncUser()
-    }).catch(() => this.setData({ loading: false }))
-  },
-
-  goBack() {
-    wx.navigateBack({ fail: () => wx.switchTab({ url: '/pages/my/my' }) })
-  },
-
-  goChapters() {
-    wx.switchTab({ url: '/pages/chapters/chapters' })
-  },
-
-  goToRead(e) {
-    const id = e.currentTarget.dataset.id
-    if (id) wx.navigateTo({ url: '/pages/read/read?id=' + encodeURIComponent(id) })
-  }
-})