新建记录时生成临时id，修复新建记录上传的附件出现重复的问题

frontend/src/core/pagetype/GenericDetailPage.vue

@@ -281,7 +281,10 @@ const { originalSlug, entity } = usePageTypeSlug(route)
 const overrideComponent = shallowRef<any | null>(null)
 const toolbarComponent = shallowRef<any | null>(null)
 const id = computed(() => route.params.id as string)
-const isNew = computed(() => id.value === 'new')
+const isNew = computed(() => {
+  const idValue = id.value
+  return idValue === 'new' || idValue.startsWith('new-')
+})
 const canEdit = ref(false)
 
 const record = ref<any>({})
@@ -964,13 +967,16 @@ async function handleSave() {
       return
     }
   } catch {
-    // 忽略 JSON 对比异常，继续保存
   }
   loading.value = true
   try {
     if (isNew.value) {
       const url = `/api/data/${encodeURIComponent(entity.value)}`
-      const response = await axios.post(url, record.value, { headers: get_session_api_headers(), withCredentials: true })
+      const recordData = { ...record.value }
+      if (id.value.startsWith('new-')) {
+        recordData.__temporary_name = id.value
+      }
+      const response = await axios.post(url, recordData, { headers: get_session_api_headers(), withCredentials: true })
       message.success(t('Created successfully'))
       // 保存成功更新快照
       try { originalRecord.value = JSON.parse(JSON.stringify(record.value)) } catch { originalRecord.value = { ...record.value } }

frontend/src/core/pagetype/GenericListPage.vue

@@ -350,8 +350,9 @@ async function handleDeleteSelected() {
 }
 
 function createRecordHandler() {
-  // 占位：跳详情新建
-  openDetail('new')
+  const randomStr = Math.random().toString(36).substring(2, 12)
+  const tempName = `new-${originalSlug.value}-${randomStr}`
+  openDetail(tempName)
 }
 
 function editRecord(row: any) {