perf: 消除 outbound/borrow BOM 匹配的 while(true) 全量加载

## 后端
- outbound.py: 新增 POST /api/v1/outbound/bom-match-stock 端点
  接收 child_ids[]，服务端按 base_id IN 查询三表有库存记录并返回

## 前端
- outbound.ts: 新增 bomMatchStock(childIds) API 函数
- Selection.vue: loadAllStockForBom (while(true) 全量) → loadStockForBom (单次 API)
- borrow/apply/index.vue: 同上

## 效果
- BOM 匹配从 ~90 次 HTTP 请求降为 1 次
- 浏览器内存从 ~18000 条降为 ~8-50 条

inventory-web/src/api/outbound.ts

@@ -122,4 +122,16 @@ export function approveRequest(id: number, data: { action: 'approve' | 'reject';
         method: 'patch',
         data
     })
+}
+
+/**
+ * BOM 匹配库存（替代前端 while(true) 全量加载）
+ * 根据 BOM 子件的 base_id 列表，服务端精确查询有库存的记录
+ */
+export function bomMatchStock(childIds: number[]) {
+    return request({
+        url: '/v1/outbound/bom-match-stock',
+        method: 'post',
+        data: { child_ids: childIds }
+    })
 }

inventory-web/src/views/borrow/apply/index.vue

@@ -443,6 +443,7 @@ import { ElMessage, ElTable, ElMessageBox } from 'element-plus'
 import { printSelectionList } from '@/api/inbound/stock'
 import { useUserStore } from '@/stores/user'
 import { submitBorrowRequest, getBorrowStockList } from '@/api/transaction'
+import { bomMatchStock } from '@/api/outbound'
 import { getApproversList } from '@/api/auth'
 import { getBomList, getBomDetail, getBomWithStock } from '@/api/bom'
 
@@ -602,32 +603,20 @@ const loadStockList = async () => {
   }
 }
 
-// BOM 匹配用：全量加载库存（不分页），确保所有物料都能匹配到
-const loadAllStockForBom = async () => {
+// BOM 匹配用：服务端精确查询匹配库存（替代前端 while(true) 全量加载）
+const loadStockForBom = async (childIds: number[]) => {
   stockLoading.value = true
   try {
-    let allItems: any[] = []
-    let page = 1
-    const pageSize = 200
-    while (true) {
-      const res: any = await getBorrowStockList({
-        page,
-        pageSize,
-        is_aggregated: true
-      })
-      const list = (res.data?.list || []).map((item: any) => ({
-        ...item,
-        uniqueKey: `${item.type}_${item.id}`,
-        warehouse_location: item.warehouse_location || item.warehouse_loc || item.full_path || ''
-      }))
-      allItems = allItems.concat(list)
-      if (list.length < pageSize) break
-      page++
-    }
-    stockList.value = allItems
-    stockTotal.value = allItems.length
+    const res: any = await bomMatchStock(childIds)
+    const items = (res.data?.items || []).map((item: any) => ({
+      ...item,
+      uniqueKey: item.uniqueKey || `${item.type}_${item.id}`,
+      warehouse_location: item.warehouse_location || item.warehouse_loc || item.full_path || ''
+    }))
+    stockList.value = items
+    stockTotal.value = items.length
   } catch (e) {
-    ElMessage.error('加载库存列表失败')
+    ElMessage.error('加载 BOM 匹配库存失败')
   } finally {
     stockLoading.value = false
   }
@@ -743,10 +732,6 @@ watch(selectedBomNo, async (newBomNo) => {
 const confirmBomAdd = async () => {
   if (!selectedBomNo.value) return ElMessage.warning('请选择 BOM')
 
-  if (stockList.value.length === 0) {
-    await loadAllStockForBom()
-  }
-
   if (currentBomDetail.value.length === 0) {
     try {
       const detailRes: any = await getBomWithStock(selectedBomNo.value)
@@ -758,6 +743,10 @@ const confirmBomAdd = async () => {
   }
 
   const bomRows = currentBomDetail.value
+
+  // ★ 服务端精确查询 BOM 子件匹配库存（替代前端 while(true) 全量加载）
+  const childIds = bomRows.map((b: any) => b.child_id).filter(Boolean)
+  await loadStockForBom(childIds)
   let addedCount = 0
   let skippedCount = 0
 

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

@@ -442,7 +442,7 @@ import { ElMessage, ElTable, ElMessageBox } from 'element-plus'
 import { getStockList, printSelectionList } from '@/api/inbound/stock'
 import { getBomList, getBomDetail, getBomWithStock } from '@/api/bom'
 import { useUserStore } from '@/stores/user'
-import { submitOutboundRequest } from '@/api/outbound'
+import { submitOutboundRequest, bomMatchStock } from '@/api/outbound'
 import { getApproversList } from '@/api/auth'
 
 const userStore = useUserStore()
@@ -605,32 +605,20 @@ const loadStockList = async () => {
   }
 }
 
-// BOM 匹配用：全量加载库存（不分页），确保所有物料都能匹配到
-const loadAllStockForBom = async () => {
+// BOM 匹配用：服务端精确查询匹配库存（替代前端 while(true) 全量加载）
+const loadStockForBom = async (childIds: number[]) => {
   stockLoading.value = true
   try {
-    let allItems: any[] = []
-    let page = 1
-    const pageSize = 200
-    while (true) {
-      const res: any = await getStockList({
-        page,
-        pageSize,
-        is_aggregated: true
-      })
-      const list = (res.data?.list || []).map((item: any) => ({
-        ...item,
-        uniqueKey: `${item.type}_${item.id}`,
-        warehouse_location: item.warehouse_location || item.warehouse_loc || item.full_path || ''
-      }))
-      allItems = allItems.concat(list)
-      if (list.length < pageSize) break
-      page++
-    }
-    stockList.value = allItems
-    stockTotal.value = allItems.length
+    const res: any = await bomMatchStock(childIds)
+    const items = (res.data?.items || []).map((item: any) => ({
+      ...item,
+      uniqueKey: item.uniqueKey || `${item.type}_${item.id}`,
+      warehouse_location: item.warehouse_location || item.warehouse_loc || item.full_path || ''
+    }))
+    stockList.value = items
+    stockTotal.value = items.length
   } catch (e) {
-    ElMessage.error('加载库存列表失败')
+    ElMessage.error('加载 BOM 匹配库存失败')
   } finally {
     stockLoading.value = false
   }
@@ -776,10 +764,6 @@ watch(selectedBomNo, async (newBomNo) => {
 const confirmBomAdd = async () => {
   if (!selectedBomNo.value) return ElMessage.warning('请选择 BOM')
 
-  if (stockList.value.length === 0) {
-    await loadAllStockForBom()
-  }
-
   if (currentBomDetail.value.length === 0) {
     try {
       const detailRes: any = await getBomWithStock(selectedBomNo.value)
@@ -791,6 +775,10 @@ const confirmBomAdd = async () => {
   }
 
   const bomRows = currentBomDetail.value
+
+  // ★ 服务端精确查询 BOM 子件匹配库存（替代前端 while(true) 全量加载）
+  const childIds = bomRows.map((b: any) => b.child_id).filter(Boolean)
+  await loadStockForBom(childIds)
   let addedCount = 0
   let skippedCount = 0