feat: 增加DEFAULT_USER_PASSWORD，作为创建用户时的默认密码，添加p-limit库，添加DB_PARALLEL_LIMIT = 32环境变量作为“数据库批次操作默认并发数” 限制只有超级管理员才能创建超级管理员用户 删除用户时可以级联删除SelectionLog 添加zustand全局状态管理 一对多的院系管理功能 ，支持增删改查院系管理员信息、用户可以在header中切换管理的院系

src/components/layout/header.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useState } from 'react'
+import { useEffect, useState } from 'react'
 import { User, LogOut, KeyRound } from 'lucide-react'
 import { DevPanel } from '@/app/(main)/dev/panel'
 import { ChangePasswordDialog } from '@/components/layout/change-password-dialog'
@@ -14,7 +14,6 @@ import {
   DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
-import { Badge } from '@/components/ui/badge'
 import { Separator } from '@/components/ui/separator'
 import { SidebarTrigger } from '@/components/ui/sidebar'
 import { signOut } from 'next-auth/react'
@@ -23,6 +22,11 @@ import { useTheme } from 'next-themes'
 import { ThemeToggleButton, useThemeTransition } from '@/components/common/theme-toggle-button'
 import { getMenuTitle } from '@/constants/menu'
 import type { User as AppUser } from '@/types/user'
+import { useUserStore } from '@/lib/stores/userStore'
+import { toast } from 'sonner'
+import { trpc } from '@/lib/trpc'
+import { AdvancedSelect, SelectContent, SelectedName, SelectInput, SelectItemList, SelectPopover, SelectTrigger } from '@/components/common/advanced-select'
+import type { Dept } from '@prisma/client'
 
 interface HeaderProps {
   user?: AppUser
@@ -38,6 +42,47 @@ export function Header({ user }: HeaderProps) {
 
   const pageTitle = getMenuTitle(pathname, 2) // 只匹配到第二级菜单
 
+  // 从zustand store获取当前管理的院系信息
+  const { setCurrentManagedDept } = useUserStore()
+
+  // 获取可管理的院系列表（包含当前管理的院系信息）
+  const { data: managedDeptsData } = trpc.users.getManagedDepts.useQuery()
+  
+  // 本地状态管理
+  const [currentManagedDeptCode, setCurrentManagedDeptCode] = useState<string | null>(null)
+  const [managedDepts, setManagedDepts] = useState<Array<Dept>>([])
+  
+  // 初始化数据
+  useEffect(() => {
+    if (managedDeptsData && managedDeptsData.currentDept !== undefined) {
+      setCurrentManagedDeptCode(managedDeptsData.currentDept)
+      setManagedDepts(managedDeptsData.depts)
+      
+      // 更新store中的当前管理院系信息
+      const deptInfo = managedDeptsData.depts.find(dept => dept.code === managedDeptsData.currentDept) || null
+      setCurrentManagedDept(deptInfo)
+    }
+  }, [managedDeptsData, setCurrentManagedDept])
+  
+  // 切换管理院系
+  const switchManagedDeptMutation = trpc.users.switchManagedDept.useMutation({
+    onSuccess: (data) => {
+      toast.success('切换管理院系成功')
+      // 更新本地状态
+      setCurrentManagedDeptCode(data.deptCode)
+      // 更新store中的当前管理院系信息 
+      setCurrentManagedDept(managedDepts.find(dept => dept.code === data.deptCode) || null)
+    },
+    onError: (error) => {
+      toast.error(error.message || '切换管理院系失败')
+    },
+  })
+  
+  // 处理院系切换
+  const handleDeptChange = (deptCode: string | null) => {
+    switchManagedDeptMutation.mutate({ deptCode })
+  }
+
   const handleThemeToggle = () => {
     startTransition(() => {
       setTheme(theme === 'dark' ? 'light' : 'dark')
@@ -105,6 +150,52 @@ export function Header({ user }: HeaderProps) {
               <DropdownMenuItem disabled>
                 {user.isSuperAdmin ? '超级管理员' : (Array.isArray(user.roles) ? user.roles.join('、') : user.roles)}
               </DropdownMenuItem>
+              {/* 管理院系 - 根据可管理院系数量决定显示方式 */}
+              {managedDepts.length > 0 && (
+                <>
+                  <DropdownMenuSeparator />
+                  <DropdownMenuLabel>管理院系</DropdownMenuLabel>
+                  {managedDepts.length === 1 ? (
+                    // 只有一个可管理院系时，直接显示院系名称
+                    <DropdownMenuItem disabled>
+                      {managedDepts[0].fullName}
+                    </DropdownMenuItem>
+                  ) : (
+                    // 多个可管理院系时，显示下拉选择器
+                    <div className="px-2 py-1.5">
+                      <AdvancedSelect
+                        value={currentManagedDeptCode}
+                        onChange={handleDeptChange}
+                        options={managedDepts.map(dept => ({
+                          id: dept.code,
+                          name: dept.fullName,
+                          shortName: dept.name
+                        }))}
+                        disabled={switchManagedDeptMutation.isPending}
+                        filterFunction={(option, searchValue) => {
+                          const search = searchValue.toLowerCase()
+                          return option.id.includes(search) ||
+                                 option.name.toLowerCase().includes(search) ||
+                                 (option.shortName && option.shortName.toLowerCase().includes(search))
+                        }}
+                      >
+                        <SelectPopover>
+                          <SelectTrigger
+                            placeholder="请选择管理院系"
+                            className="h-9"
+                          >
+                            <SelectedName />
+                          </SelectTrigger>
+                          <SelectContent>
+                            {managedDepts.length > 5 && <SelectInput placeholder="搜索院系名称/代码" />}
+                            <SelectItemList />
+                          </SelectContent>
+                        </SelectPopover>
+                      </AdvancedSelect>
+                    </div>
+                  )}
+                </>
+              )}
               <DropdownMenuSeparator />
               <DropdownMenuItem
                 className="text-red-600 cursor-pointer"
@@ -131,4 +222,4 @@ export function Header({ user }: HeaderProps) {
       />
     </header>
   )
-}
+}