update sku mapping

frontend/src/pages/sku-mappings/index.vue

@@ -88,6 +88,7 @@ const filteredStoreOptions = computed(() => {
 })
 
 // Remote search for SKU origins
+let skipCompanyWatch = false
 const skuSearchOptions = ref<{ value: number; label: string }[]>([])
 const skuSearching = ref(false)
 let skuSearchTimer: ReturnType<typeof setTimeout> | null = null
@@ -157,6 +158,12 @@ function openCreate() {
 function openEdit(record: SkuMappingForm & { id: number }) {
   editingId.value = record.id
   modalTitle.value = '编辑连接'
+  // 先预填 options，再赋值 form（避免 watch 清空后丢失）
+  skuSearchOptions.value = record.origin_sku_id
+    ? [{ value: record.origin_sku_id as number, label: record.origin_sku || '' }]
+    : []
+  // 暂停 watch 重置逻辑
+  skipCompanyWatch = true
   Object.assign(form, {
     company_id: record.company_id,
     platform_id: record.platform_id,
@@ -170,10 +177,7 @@ function openEdit(record: SkuMappingForm & { id: number }) {
     enabled: record.enabled ?? true,
     note: record.note || '',
   })
-  // 从已有列表数据预填 origin SKU 选项，无需额外 API 调用
+  nextTick(() => { skipCompanyWatch = false })
-  skuSearchOptions.value = record.origin_sku_id
-    ? [{ value: record.origin_sku_id as number, label: record.origin_sku || '' }]
-    : []
   modalVisible.value = true
 }
 
@@ -284,10 +288,11 @@ function applyGenerated() {
   }
 }
 
-// Watch company change to reset SKU search
+// Watch company change to reset SKU search (skip during openEdit)
 watch(
   () => form.company_id,
   () => {
+    if (skipCompanyWatch) return
     form.origin_sku_id = undefined
     form.origin_sku = ''
     skuSearchOptions.value = []