feat: 重构全局搜索框为复合条件选择，支持按名称、俗名、规格进行精准查杂

inventory-web/src/views/stock/inbound/buy.vue

@@ -17,15 +17,22 @@
 
         <el-input
             v-model="queryParams.keyword"
-            placeholder="请输入名称、规格搜索..."
+            placeholder="请输入搜索关键字"
             class="filter-item-input"
             clearable
-            @input="handleInputSearch"
             @clear="fetchData"
             @keyup.enter="fetchData"
-            style="width: 200px;"
+            style="width: 280px;"
         >
-          <template #prefix><el-icon><Search /></el-icon></template>
+          <template #prepend>
+            <el-select v-model="queryParams.searchField" style="width: 90px">
+              <el-option label="全部" value="all" />
+              <el-option label="名称" value="name" />
+              <el-option label="规格" value="spec" />
+              <el-option label="条码" value="barcode" />
+              <el-option label="批号" value="batch_number" />
+            </el-select>
+          </template>
         </el-input>
 
         <el-input
@@ -771,6 +778,7 @@ const queryParams = reactive({
   page: 1,
   pageSize: 50,
   keyword: '',
+  searchField: 'all',
   sku: '',
   category: '',
   material_type: '',
@@ -1277,6 +1285,7 @@ const loadWarehouseTree = async () => {
 
 const resetQuery = () => {
   queryParams.keyword = ''
+  queryParams.searchField = 'all'
   queryParams.sku = ''
   queryParams.category = ''
   queryParams.material_type = ''