fix(cmpt): 优化微信分享图布局和间距

## 修复内容
1. 微信分享图上传控件改为上下排列（图片预览在上，上传按钮在下）
2. 去掉微信分享图区块顶部间隔
3. 去掉微信分享图与"赛事详情tab是否开启"之间的间隔

## 技术细节
- 为 .logo-div 添加 flex-direction: column 实现上下排列
- 为上传按钮添加 margin-top: 10px 增加间距
- 为两个 .cmptLogo div 添加 margin-top: 0 去掉顶部间隔
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main/webapp/WEB-INF/views/cmpt/index.jsp

@@ -314,13 +314,13 @@
                                                                 </div>
                                                             </div>
                                                             <!-- WeChat Share Image -->
-                                                            <div class="cmptLogo">
+                                                            <div class="cmptLogo" style="margin-top: 0;">
                                                                 <div class="checklist card">
                                                                     <div class="card-header d-flex align-items-center">
                                                                         <h2 class="h3">微信分享图 </h2>
                                                                     </div>
                                                                     <div class="card-body no-padding">
-                                                                        <div class="logo-div">
+                                                                        <div class="logo-div" style="display: flex; flex-direction: column; align-items: center;">
                                                                             <img src="${cmpt.wechatShareImage}"
                                                                                 class="logo ${cmpt.wechatShareImage != null ? 'cmpt-logo':''}"
                                                                                 alt="${ctxStatic}/managerPagePhoto/file.png"
@@ -329,7 +329,8 @@
                                                                             <input type="hidden" name="hdWechatShareImage"
                                                                                 id="hdWechatShareImage" value="${cmpt.wechatShareImage}" />
                                                                             <input id="uploadWechatShare" type="file"
-                                                                                onchange="changeLogoImg('wechatShareImage', 'uploadWechatShare','0','0','100%','100%')" />
+                                                                                onchange="changeLogoImg('wechatShareImage', 'uploadWechatShare','0','0','100%','100%')"
+                                                                                style="margin-top: 10px;" />
                                                                         </div>
                                                                         <img src="${ctxStatic}/managerPagePhoto/zhu.png"
                                                                             style="width: 20px;margin: 0 5px 3px 25px;" />
@@ -338,7 +339,7 @@
                                                                     </div>
                                                                 </div>
                                                             </div>
-                                                            <div class="cmptLogo">
+                                                            <div class="cmptLogo" style="margin-top: 0;">
                                                                 <div class="checklist card">
                                                                     <div class="card-header d-flex align-items-center">
                                                                         <h2 class="h3">赛事详情tab是否开启</h2>