style: 分离商品条码输入框和验证按钮

frontend/src/views/CreateTask.vue

@@ -247,12 +247,12 @@
               </div>
               
               <!-- 添加新条码 -->
-              <a-input-group compact style="margin-top: 8px;">
+              <div style="margin-top: 8px; display: flex; gap: 10px;">
                 <a-input
                   v-model:value="newBarcodeInput"
                   placeholder="请输入商品条码，验证库存后添加"
                   size="large"
-                  style="width: calc(100% - 120px)"
+                  style="flex: 1;"
                   @pressEnter="handleAddBarcode"
                 />
                 <a-button 
@@ -263,7 +263,7 @@
                 >
                   验证并添加
                 </a-button>
-              </a-input-group>
+              </div>
               
               <!-- 库存检查结果（临时显示） -->
               <div v-if="inventoryCheckResult" class="inventory-result" :class="{ 'success': inventoryCheckResult.canPublish, 'error': !inventoryCheckResult.canPublish }">