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/practice/error.tsx

@@ -2,24 +2,38 @@
 
 import { useEffect } from "react"
 import { BarChart3 } from "lucide-react"
+import { useTranslations } from "next-intl"
 
 import { EmptyState } from "@/shared/components/ui/empty-state"
 
-export default function Error() {
+export default function TeacherPracticeError({
+  error,
+  reset,
+}: {
+  error: Error & { digest?: string }
+  reset: () => void
+}): React.ReactNode {
+  const t = useTranslations("practice")
   useEffect(() => {
-    console.error("Practice analytics page error")
-  }, [])
+    console.error("Practice analytics page error:", error)
+  }, [error])
 
   return (
     <div className="flex h-full flex-col space-y-8 p-8">
       <div>
-        <h1 className="text-2xl font-bold tracking-tight">专项练习分析</h1>
-        <p className="text-muted-foreground">加载练习分析数据时发生错误</p>
+        <h1 className="text-2xl font-bold tracking-tight">
+          {t("errors.pageErrorTitlePractice")}
+        </h1>
+        <p className="text-muted-foreground">{t("errors.pageErrorPractice")}</p>
       </div>
       <EmptyState
         icon={BarChart3}
-        title="加载失败"
-        description="请刷新页面重试，或联系管理员检查数据访问权限。"
+        title={t("errors.loadFailed")}
+        description={t("errors.loadFailedDescription")}
+        action={{
+          label: t("errors.retry"),
+          onClick: () => reset(),
+        }}
         className="h-[360px] bg-card"
       />
     </div>