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/grades/error.tsx

@@ -1,6 +1,7 @@
 "use client"
 
 import { AlertCircle } from "lucide-react"
+import { useTranslations } from "next-intl"
 
 import { EmptyState } from "@/shared/components/ui/empty-state"
 
@@ -10,14 +11,15 @@ export default function StudentGradesError({
   error: Error & { digest?: string }
   reset: () => void
 }) {
+  const t = useTranslations("student")
   return (
     <div className="flex h-full flex-col items-center justify-center space-y-4 p-8">
       <EmptyState
         icon={AlertCircle}
-        title="成绩查询页面加载失败"
-        description="抱歉，页面加载时发生了意外错误。请稍后重试。"
+        title={t("error.title")}
+        description={t("error.description")}
         action={{
-          label: "重试",
+          label: t("error.retry"),
           onClick: () => reset(),
         }}
         className="border-none shadow-none h-auto"

src/app/(dashboard)/student/grades/page.tsx

@@ -20,6 +20,7 @@ export default async function StudentGradesPage({
   searchParams: Promise<SearchParams>
 }) {
   const ctx = await requirePermission(Permissions.GRADE_RECORD_READ)
+  const t = await getTranslations("grades")
   const [sp, summary, rankingTrend, classAverageTrend, subjectOptions] = await Promise.all([
     searchParams,
     getStudentGradeSummary(ctx.userId, ctx.dataScope),
@@ -32,7 +33,6 @@ export default async function StudentGradesPage({
   ])
 
   if (!summary) {
-    const t = await getTranslations("grades")
     return (
       <div className="space-y-8">
         <div>
@@ -73,7 +73,7 @@ export default async function StudentGradesPage({
     <div className="space-y-8">
       <div>
         <h2 className="text-2xl font-bold tracking-tight">{summary.studentName}</h2>
-        <p className="text-muted-foreground">{summary.records.length} 条成绩记录</p>
+        <p className="text-muted-foreground">{t("summary.recordCount", { count: summary.records.length })}</p>
       </div>
       <GradeFilters subjects={subjectOptions.map((s) => ({ id: s.id, name: s.name }))} />
       {filteredSummary.records.length > 0 && (