feat(app): add error/loading boundaries across all dashboard routes and new routes

- Add error.tsx and loading.tsx boundaries for admin, parent, student, teacher routes

- Add admin announcements edit, audit-logs overview, curriculum-map, invitation-codes, permissions, questions, roles routes

- Add admin elective detail and components, files, course-plans, users, scheduling boundaries

- Add messages group-compose route

- Add parent course-plans, elective, grades report-card, practice routes

- Add student course-plans, elective detail, error-book dialogs, grades report-card, learning study-path, leave, schedule boundaries

- Add teacher attendance report, classes boundaries, course-plans boundaries, elective, exams analytics/edit-rich/all/create/new, grades report-card, homework boundaries, leave, lesson-plans calendar

- Add auth loading, onboarding loading, api cron

src/app/(dashboard)/teacher/attendance/page.tsx

@@ -4,8 +4,9 @@ import { PlusCircle, BarChart3, ClipboardList } from "lucide-react"
 import { getTranslations } from "next-intl/server"
 import { Button } from "@/shared/components/ui/button"
 import { EmptyState } from "@/shared/components/ui/empty-state"
-import { ListPagination, computePagination, paginate } from "@/shared/components/ui/list-pagination"
-import { getAuthContext } from "@/shared/lib/auth-guard"
+import { ListPagination, computePagination } from "@/shared/components/ui/list-pagination"
+import { requirePermission, getAuthContext } from "@/shared/lib/auth-guard"
+import { Permissions } from "@/shared/types/permissions"
 import { getParam, type SearchParams } from "@/shared/lib/search-params"
 import { getTeacherClasses } from "@/modules/classes/data-access"
 import { getAttendanceRecords } from "@/modules/attendance/data-access"
@@ -36,6 +37,7 @@ export default async function TeacherAttendancePage({
   searchParams: Promise<SearchParams>
 }): Promise<JSX.Element> {
   const sp = await searchParams
+  await requirePermission(Permissions.ATTENDANCE_READ)
   const ctx = await getAuthContext()
   const t = await getTranslations("attendance")
 
@@ -55,12 +57,11 @@ export default async function TeacherAttendancePage({
   ])
   const classOptions = classes.map((c) => ({ id: c.id, name: c.name }))
 
-  // 分页计算
+  // 分页计算：使用后端返回的 total/totalPages，避免基于截断数据计算
   const { page } = computePagination(sp, PAGE_SIZE)
-  const total = result.items.length
-  const totalPages = Math.max(1, Math.ceil(total / PAGE_SIZE))
+  const total = result.total
+  const totalPages = result.totalPages
   const currentPage = Math.min(page, totalPages)
-  const pagedRecords = paginate(result.items, currentPage, PAGE_SIZE)
   const hasFilters = Boolean(classId || status || date)
 
   const header = (
@@ -103,7 +104,7 @@ export default async function TeacherAttendancePage({
         />
       ) : (
         <div className="space-y-4">
-          <AttendanceRecordList records={pagedRecords} />
+          <AttendanceRecordList records={result.items} />
           {total > 0 ? (
             <ListPagination
               page={currentPage}