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)/parent/children/[studentId]/page.tsx

@@ -14,6 +14,7 @@ import {
 } from "@/modules/parent/components/child-detail-panel"
 import { EmptyState } from "@/shared/components/ui/empty-state"
 import { ShieldAlert } from "lucide-react"
+import { getTranslations } from "next-intl/server"
 
 export const dynamic = "force-dynamic"
 
@@ -27,6 +28,7 @@ export default async function ChildDetailPage({
   const { studentId } = await params
   const sp = await searchParams
   const ctx = await requireAuth()
+  const t = await getTranslations("common")
 
   // 校验当前家长与该子女存在关系（同时按 parentId + studentId 过滤，防止跨家庭信息泄露）
   const relation = await verifyParentChildRelation(studentId, ctx.userId)
@@ -41,8 +43,8 @@ export default async function ChildDetailPage({
       <div className="p-6 md:p-8">
         <EmptyState
           icon={ShieldAlert}
-          title="Access denied"
-          description="This student is not linked to your account. Please contact the school administrator if you believe this is an error."
+          title={t("accessDenied")}
+          description={t("accessDeniedDesc")}
           className="border-none shadow-none"
         />
       </div>