feat: add material spec to BOM responses and UI

Co-authored-by: aider (openai/DeepSeek-V3.2-Thinking) <aider@aider.chat>

inventory-web/src/views/bom/BomManage.vue

@@ -13,6 +13,7 @@
       <el-table v-loading="loading" :data="bomList" border style="width: 100%">
         <el-table-column prop="bom_no" label="BOM编号" min-width="180" />
         <el-table-column prop="parent_name" label="父件名称" min-width="180" />
+        <el-table-column prop="parent_spec" label="父件规格" min-width="180" />
         <el-table-column prop="version" label="版本" width="100" />
         <el-table-column prop="child_count" label="子件数量" width="100" />
         <el-table-column label="操作" width="280" align="center" fixed="right">
@@ -39,7 +40,7 @@
             <el-option
               v-for="item in materialOptions"
               :key="item.id"
-              :label="item.name"
+              :label="`${item.name} (${item.spec})`"
               :value="item.id"
             />
           </el-select>
@@ -61,7 +62,7 @@
                 <el-option
                   v-for="item in materialOptions"
                   :key="item.id"
-                  :label="item.name"
+                  :label="`${item.name} (${item.spec})`"
                   :value="item.id"
                 />
               </el-select>
@@ -120,6 +121,7 @@ interface BomItem {
 interface MaterialBase {
   id: number
   name: string
+  spec: string
 }
 
 interface ChildRow {