miniprogram: 用永平版本替换（含超级个体、会员详情、提现等）

- 来源: 一场soul的创业实验-永平/soul/miniprogram
- 新增: addresses/agreement/privacy/withdraw-records 等页面
- 新增: components/icon, utils/chapterAccessManager, readingTracker
- 删除: 上传脚本、部署说明等冗余文件
- 同步永平最新结构和功能

Co-authored-by: Cursor <cursoragent@cursor.com>

miniprogram/pages/chapters/chapters.wxml

@@ -4,7 +4,13 @@
   <!-- 自定义导航栏 -->
   <view class="nav-bar" style="padding-top: {{statusBarHeight}}px;">
     <view class="nav-content">
+      <view class="nav-left">
+        <view class="search-btn" bindtap="goToSearch">
+          <text class="search-icon">🔍</text>
+        </view>
+      </view>
       <view class="nav-title brand-color">目录</view>
+      <view class="nav-right"></view>
     </view>
   </view>