feat(outbound): BOM 出库增加清单打印与缺货持久化提醒

- BOM 弹窗物料清单增加「本次结果」列（可出/缺货未出）
- 增加「打印 BOM 清单」按钮，可打印当前 BOM 的完整出库清单
- 缺货物料持久化到 localStorage，下次打开同一 BOM 时自动提示历史缺货记录
  防止重复出库或漏出
- 打印区域使用与 A4 出库单一致的 iframe 打印机制

inventory-web/src/views/outbound/Selection.vue

@@ -239,14 +239,21 @@
               <span :style="{ color: row.shortage > 0 ? '#F56C6C' : '#67C23A', fontWeight: 'bold' }">{{ row.shortage > 0 ? row.shortage : '✓' }}</span>
             </template>
           </el-table-column>
+          <el-table-column label="本次结果" width="90" align="center">
+            <template #default="{ row }">
+              <el-tag v-if="row.shortage > 0" type="danger" size="small">缺货未出</el-tag>
+              <el-tag v-else type="success" size="small">可出</el-tag>
+            </template>
+          </el-table-column>
         </el-table>
       </el-alert>
 
       <div style="margin-left: 100px; color: #909399; font-size: 12px;">
-        注意：系统将自动计算所需原料数量 ( 配方用量 × 套数 )。
+        注意：系统将自动计算所需原料数量 ( 配方用量 × 套数 )。缺货物料不会加入出库单，请先补货。
       </div>
       <template #footer>
         <el-button @click="bomSelectVisible = false">取消</el-button>
+        <el-button v-if="bomDetailList.length > 0" :icon="Printer" @click="printBomChecklist">打印 BOM 清单</el-button>
         <el-button
           v-if="userStore.hasPermission('outbound_selection:operation')"
           type="primary"
@@ -257,6 +264,37 @@
       </template>
     </el-dialog>
 
+    <!-- BOM 打印区域（隐藏，打印时克隆到 iframe） -->
+    <div id="bom-print-area" class="print-bom-area" style="display:none;">
+      <h2 style="text-align:center; margin:0 0 8px;">BOM 出库清单</h2>
+      <p style="text-align:center; margin:0 0 16px; font-size:13px;">
+        BOM: <b>{{ selectedBomNo }}</b> ｜ 套数: <b>{{ bomSets }}</b> 套 ｜ 生成时间: {{ bomPrintTime }}
+      </p>
+      <table class="print-table">
+        <thead>
+          <tr>
+            <th>序号</th><th>物料名称</th><th>SKU</th><th>需求量</th><th>可用库存</th><th>缺料</th><th>结果</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="(row, idx) in bomDetailList" :key="idx">
+            <td>{{ idx + 1 }}</td>
+            <td>{{ row.name }}</td>
+            <td>{{ row.sku }}</td>
+            <td>{{ row.need }}</td>
+            <td>{{ row.available }}</td>
+            <td>{{ row.shortage > 0 ? row.shortage : '-' }}</td>
+            <td>{{ row.shortage > 0 ? '缺货未出' : '可出' }}</td>
+          </tr>
+        </tbody>
+      </table>
+      <p style="margin-top:12px;">
+        可出 <b style="color:#67C23A;">{{ bomAvailableCount }}</b> 种 ｜
+        缺货 <b style="color:#F56C6C;">{{ bomShortageCount }}</b> 种
+      </p>
+      <p style="color:#909399; font-size:12px;">缺货物料不会加入本次出库单，请补货后重新按 BOM 出库。</p>
+    </div>
+
     <el-dialog
         v-model="previewVisible"
         title="出库单核对与打印"
@@ -569,6 +607,11 @@ const bomDetailList = computed(() => {
 
 const hasShortage = computed(() => bomDetailList.value.some((item: any) => item.shortage > 0) && bomSets.value > maxBuildableSets.value)
 
+// ★ BOM 打印统计
+const bomPrintTime = ref('')
+const bomAvailableCount = computed(() => bomDetailList.value.filter(i => i.shortage === 0).length)
+const bomShortageCount = computed(() => bomDetailList.value.filter(i => i.shortage > 0).length)
+
 // --- 辅助方法 ---
 const getTypeTag = (type: string) => {
   switch (type) {
@@ -741,6 +784,23 @@ const openBomSelect = async () => {
     bomOptions.value = Array.from(groupMap.entries()).map(([category, items]) => ({
       category, count: items.length, items
     }))
+
+    // ★ 提示有历史缺货记录的 BOM，防止下次重复出/漏出
+    const pendingBoms = Object.keys(bomShortageRecords.value).filter(no =>
+      flatItems.some(i => i.bom_no === no)
+    )
+    if (pendingBoms.length > 0) {
+      ElMessageBox.confirm(
+        `检测到以下 BOM 存在未完成的缺货记录（上次按 BOM 出库时缺货）：\n\n` +
+        pendingBoms.map(no => {
+          const rec = bomShortageRecords.value[no]
+          return `• ${no}（${rec.items.length} 种缺货，${rec.time}）`
+        }).join('\n') +
+        `\n\n建议先补货后再出库，避免漏出。是否查看？`,
+        '存在未完成出库',
+        { confirmButtonText: '知道了', cancelButtonText: '忽略', type: 'warning' }
+      ).catch(() => {})
+    }
   } catch (e) {
     ElMessage.error('加载 BOM 列表失败')
   }
@@ -818,12 +878,36 @@ const confirmBomAdd = async () => {
   if (addedCount > 0) {
     const tip = skippedCount > 0 ? `（跳过 ${skippedCount} 种缺货物料）` : ''
     ElMessage.success(`成功添加 ${addedCount} 类物料${tip}`)
+
+    // ★ 记录本次缺货清单（持久化，防止下次重复出/漏出）
+    saveBomShortage(selectedBomNo.value, bomDetailList.value.filter(i => i.shortage > 0))
     bomSelectVisible.value = false
   } else {
     ElMessage.warning('该 BOM 所有物料库存均为 0')
+    // 全部缺货也要记录
+    saveBomShortage(selectedBomNo.value, bomDetailList.value.filter(i => i.shortage > 0))
   }
 }
 
+// ★ 缺货记录持久化：按 BOM 编号保存到 localStorage
+const BOM_SHORTAGE_KEY = 'MOM_BOM_SHORTAGE_RECORDS'
+const bomShortageRecords = ref<Record<string, any[]>>(JSON.parse(localStorage.getItem(BOM_SHORTAGE_KEY) || '{}'))
+
+const saveBomShortage = (bomNo: string, shortageList: any[]) => {
+  const records = { ...bomShortageRecords.value }
+  if (shortageList.length > 0) {
+    records[bomNo] = {
+      time: new Date().toLocaleString('zh-CN'),
+      items: shortageList.map(i => ({ name: i.name, sku: i.sku, need: i.need, available: i.available, shortage: i.shortage }))
+    }
+  } else {
+    // 本次没有缺货 → 清除该 BOM 的历史缺货记录
+    delete records[bomNo]
+  }
+  bomShortageRecords.value = records
+  localStorage.setItem(BOM_SHORTAGE_KEY, JSON.stringify(records))
+}
+
 // --- 通用逻辑 ---
 
 const handleSelectionChange = (val: any[]) => {
@@ -963,9 +1047,54 @@ const confirmSubmitRequest = async () => {
   }
 }
 
+// ★ BOM 清单打印（复用与 confirmPrint 相同的 iframe 打印机制）
+const printBomChecklist = () => {
+  if (bomDetailList.value.length === 0) return ElMessage.warning('请先选择 BOM 并加载清单')
+  bomPrintTime.value = new Date().toLocaleString('zh-CN')
+
+  setTimeout(() => {
+    const printElement = document.getElementById('bom-print-area')
+    if (!printElement) return
+
+    const iframe = document.createElement('iframe')
+    iframe.style.position = 'fixed'
+    iframe.style.right = '0'
+    iframe.style.bottom = '0'
+    iframe.style.width = '0'
+    iframe.style.height = '0'
+    iframe.style.border = '0'
+    document.body.appendChild(iframe)
+
+    const iframeDoc = iframe.contentWindow?.document
+    if (!iframeDoc) return
+    iframeDoc.open()
+    iframeDoc.write('<html><head><title>BOM 出库清单</title></head><body></body></html>')
+    iframeDoc.close()
+
+    const style = `
+      body { font-family: 'Microsoft YaHei', sans-serif; }
+      .print-bom-area { display: block !important; padding: 20px; }
+      .print-table { width: 100%; border-collapse: collapse; }
+      .print-table th, .print-table td { border: 1px solid #000; padding: 6px 8px; font-size: 13px; text-align: center; }
+      .print-table th { background: #f0f0f0; }
+    `;
+    const styleEl = iframeDoc.createElement('style')
+    styleEl.textContent = style
+    iframeDoc.head.appendChild(styleEl)
+
+    iframeDoc.body.appendChild(printElement.cloneNode(true))
+
+    setTimeout(() => {
+      iframe.contentWindow?.focus()
+      iframe.contentWindow?.print()
+      setTimeout(() => document.body.removeChild(iframe), 1000)
+    }, 500)
+  }, 300)
+}
+
 const confirmPrint = async () => {
   previewVisible.value = false;
-  
+
   try {
     const payload = validSelectedItems.value.map(item => ({
       name: item.name, standard: item.standard, quantity: item.export_quantity