fix: 套装对比去掉标签列，横向对比按可做套装数从少到多排序

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/views/KitExport.vue

@@ -39,7 +39,6 @@
         <thead>
           <tr>
             <th class="th-name">配方名</th>
-            <th class="th-tags">标签</th>
             <th class="th-cost">套装成本</th>
             <th class="th-cost">原价成本</th>
             <th class="th-price">售价</th>
@@ -49,7 +48,6 @@
         <tbody>
           <tr v-for="r in activeKitData.recipes" :key="r._id">
             <td class="td-name">{{ r.name }}</td>
-            <td class="td-tags">{{ (r.tags || []).join('/') }}</td>
             <td class="td-cost">{{ fmtPrice(r.kitCost) }}</td>
             <td class="td-cost original">{{ fmtPrice(r.originalCost) }}</td>
             <td class="td-price">