Add server and mini-program pagination for shared lists

weapp/pages/album/album.wxml

@@ -5,7 +5,7 @@
 
 
 
-<scroll-view class="page-bg" scroll-y show-scrollbar="{{false}}" bounces="{{true}}" bindtouchstart="onTouchStart" bindtouchend="onTouchEnd" wx:if="{{!showUploadModal}}">
+<scroll-view class="page-bg" scroll-y bindscrolltolower="loadMore" lower-threshold="120" show-scrollbar="{{false}}" bounces="{{true}}" bindtouchstart="onTouchStart" bindtouchend="onTouchEnd" wx:if="{{!showUploadModal}}">
   <view class="container"><view class="j-row"><view><text class="j-eyebrow">MOMENTS WE KEEP</text><text class="j-page-title">相册里的片段</text></view><button class="j-button j-button-small" bindtap="chooseImage">＋ 照片</button></view>
 <page-state wx:if="{{loading}}" kind="loading" title="正在加载" /><page-state wx:elif="{{loadError}}" kind="error" title="加载失败" description="请检查网络后重新加载" action="重试" bind:action="loadData" />
     <view class="moments-list" wx:if="{{!loading && !loadError && batches.length > 0}}">
@@ -36,6 +36,7 @@
     </view>
   </view>
   
+<view class="j-pagination" wx:if="{{!loading && !loadError && total > 0}}"><text wx:if="{{loadingMore}}">正在加载…</text><text wx:elif="{{moreError}}" bindtap="loadMore">加载失败，点击重试</text><text wx:elif="{{hasMore}}" bindtap="loadMore">加载更多</text><text wx:else>已加载全部照片</text></view>
 </scroll-view>
 
 <view class="preview-overlay" wx:if="{{showPreview}}" bindtap="closePreview">