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/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 && (