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/components/developer-sidebar/index.vue

@@ -1,5 +1,5 @@
 <script lang="ts" setup>
-import { Boxes, Code, Database, DollarSign, FileLock, Gauge, GitBranch, Hash, Key, Megaphone, MessageSquare, Network, Plug, ScrollText, Shield, Users, Variable } from 'lucide-vue-next'
+import { Boxes, Code, DollarSign, FileLock, Gauge, GitBranch, Hash, Key, Megaphone, MessageSquare, Network, Plug, ScrollText, Shield, Users, Variable } from 'lucide-vue-next'
 import { onMounted, reactive } from 'vue'
 
 import NavTeam from '@/components/app-sidebar/nav-team.vue'

frontend/src/components/global-layout/basic-header.vue

@@ -1,11 +1,4 @@
 <script lang="ts" setup>
-import {
-  Breadcrumb,
-  BreadcrumbItem,
-  BreadcrumbList,
-  BreadcrumbPage,
-  BreadcrumbSeparator,
-} from '@/components/ui/breadcrumb'
 import { cn } from '@/lib/utils'
 
 import type { LayoutHeaderProps } from './types'