feat(app): add lesson-plans, practice, and grade dashboard routes

- Add admin/lesson-plans, parent/lesson-plans, student/lesson-plans routes

- Add student/practice and teacher/practice routes for adaptive practice

- Add management/grade/dashboard and management/grade/practice routes

- Add teacher/lesson-plans error and loading boundaries

- Update existing admin, parent, student, teacher pages with new features

- Update globals.css and proxy middleware

src/app/(dashboard)/student/error-book/error.tsx

@@ -1,17 +1,19 @@
 "use client"
 
 import { BookX } from "lucide-react"
+import { useTranslations } from "next-intl"
 
 import { EmptyState } from "@/shared/components/ui/empty-state"
 
 export default function StudentErrorBookError() {
+  const t = useTranslations("student")
   return (
     <div className="p-8">
       <EmptyState
         icon={BookX}
-        title="加载错题本失败"
-        description="发生了一些错误，请刷新页面重试。如果问题持续，请联系管理员。"
-        action={{ label: "刷新页面", onClick: () => window.location.reload() }}
+        title={t("error.title")}
+        description={t("error.description")}
+        action={{ label: t("error.retry"), onClick: () => window.location.reload() }}
         className="border-none shadow-none"
       />
     </div>