fix: 横向对比去掉售价列

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

frontend/src/views/KitExport.vue

@@ -78,7 +78,6 @@
             <tr>
               <th class="th-name">配方名</th>
               <th v-for="ka in kitAnalysis" :key="ka.id" class="th-kit">{{ ka.name }}</th>
-              <th class="th-price">售价</th>
             </tr>
           </thead>
           <tbody>
@@ -88,17 +87,6 @@
                 <template v-if="row.costs[ka.id] != null">{{ fmtPrice(row.costs[ka.id]) }}</template>
                 <template v-else><span class="na">—</span></template>
               </td>
-              <td class="td-price">
-                <div class="price-input-wrap">
-                  <span>¥</span>
-                  <input
-                    type="number"
-                    :value="getSellingPrice(row.id)"
-                    @change="setSellingPrice(row.id, $event.target.value)"
-                    class="selling-input"
-                  />
-                </div>
-              </td>
             </tr>
           </tbody>
         </table>