广场卡堆重画时保留悄悄话入口，放在模块最底部

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

js/gch/v4.js

@@ -40,6 +40,7 @@
   }
 
   sec.className = sec.className.replace(/\bgv\d\b/g, '') + ' gv4';
+  var wh = document.getElementById('whWall');   /* 11-07 悄悄话入口挂在本块里（app.js 拿着这个节点）→ 重画前摘下来，画完放回底部 */
   sec.innerHTML =
     '<div class="g4-head"><h2 class="g4-title"><span>孕妈广场</span></h2>' +
     /* 11-03 用户：首页孕妈广场右上角的分类（全部 / 家庭婚姻 / 职场 / 经验）取消，换一句小 slogan */
@@ -53,6 +54,7 @@
     '<div class="g4-rail"><span class="g4-pg"><b>1</b><i>/8</i></span></div></div>' +
     '<div class="g4-tags"></div>' +
     '<div class="g4-foot"><button type="button" class="g4-all">进孕妈广场 ›</button><span class="g4-mark">效果稿 V4</span></div>';
+  if (wh) sec.insertBefore(wh, sec.querySelector('.g4-foot'));
   sec.classList.remove('hide');
 
   var deck = sec.querySelector('.g4-deck'), pgB = sec.querySelector('.g4-pg b'), pgI = sec.querySelector('.g4-pg i'), tags = sec.querySelector('.g4-tags');