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/grades/entry/page.tsx

@@ -8,6 +8,7 @@ import { Permissions } from "@/shared/types/permissions"
 import { getParam, type SearchParams } from "@/shared/lib/search-params"
 import { EmptyState } from "@/shared/components/ui/empty-state"
 import { ClipboardList } from "lucide-react"
+import { getTranslations } from "next-intl/server"
 
 export const dynamic = "force-dynamic"
 
@@ -18,6 +19,7 @@ export default async function BatchEntryPage({
 }): Promise<JSX.Element> {
   const ctx = await requirePermission(Permissions.GRADE_RECORD_MANAGE)
   const sp = await searchParams
+  const t = await getTranslations("grades")
 
   const examId = getParam(sp, "examId")
   const classId = getParam(sp, "classId")
@@ -62,16 +64,14 @@ export default async function BatchEntryPage({
   return (
     <div className="h-full flex-1 flex-col space-y-8 p-8 md:flex">
       <div>
-        <h1 className="text-2xl font-bold tracking-tight">批量录入成绩</h1>
-        <p className="text-muted-foreground">
-          从试卷库选择试卷，按每题得分录入，像填 Excel 表格一样。
-        </p>
+        <h1 className="text-2xl font-bold tracking-tight">{t("page.entry.title")}</h1>
+        <p className="text-muted-foreground">{t("page.entry.description")}</p>
       </div>
 
       {exams.length === 0 ? (
         <EmptyState
-          title="没有可用的试卷"
-          description="请先在试卷管理中创建试卷并添加题目，才能录入成绩。"
+          title={t("page.entry.noExamsTitle")}
+          description={t("page.entry.noExamsDescription")}
           icon={ClipboardList}
           className="border-none shadow-none"
         />