feat: 添加云端函数HTTP请求、SMTP邮件、数据库操作能力

- 添加HTTP客户端工具支持GET/POST请求
- 添加SMTP邮件发送功能
- 添加数据库操作(db.getRecords, db.deleteRecord, db.deleteRecords)
- 添加订单管理云端函数(读取、接收、筛选、成功、失败)
- 添加测试推送和邮件通知云端函数
- 修复云端函数编辑页面预览代码换行显示
- 云端变量数据模型重构(合并数据类型)

frontend/src/pages/developer/cloud-variables/components/columns.ts

@@ -3,7 +3,6 @@ import type { Composer } from 'vue-i18n'
 
 import { Download, File, List, MoreHorizontal, Pencil, Power, PowerOff, Trash2 } from 'lucide-vue-next'
 import { h } from 'vue'
-import { useRouter } from 'vue-router'
 
 import type { CloudVariable } from '@/pages/developer/cloud-variables/data/schema'
 
@@ -88,21 +87,11 @@ export function getColumns(actions: {
           decimal: t('developer.cloudVariables.types.decimal'),
           string: t('developer.cloudVariables.types.string'),
           binary: t('developer.cloudVariables.types.binary'),
+          stream: '记录',
         }
         return h(Badge, { variant: 'outline' }, () => typeMap[type || 'string'] || type || 'string')
       },
     },
-    {
-      accessorKey: 'data_type',
-      header: () => '数据模式',
-      cell: ({ row }) => {
-        const dataType = row.getValue('data_type') as string
-        if (dataType === 'stream') {
-          return h(Badge, { variant: 'secondary', class: 'bg-blue-50 text-blue-700 dark:bg-blue-950 dark:text-blue-300' }, () => '流水')
-        }
-        return h(Badge, { variant: 'outline' }, () => '单值')
-      },
-    },
     {
       accessorKey: 'description',
       header: () => t('developer.cloudVariables.columns.description'),
@@ -182,7 +171,7 @@ export function getColumns(actions: {
                 () => {
                   const items = []
 
-                  if (variable.data_type === 'stream') {
+                  if (variable.var_type === 'stream') {
                     items.push(
                       h(DropdownMenuItem, { onClick: () => actions.onViewRecords(variable) }, () => [
                         h(List, { class: 'mr-2 h-4 w-4' }),