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/grades/page.tsx

@@ -11,6 +11,7 @@ import {
 import { ParentExportButton } from "@/modules/parent/components/parent-export-button"
 import { GraduationCap } from "lucide-react"
 import type { ClassAverageTrendResult } from "@/modules/grades/types"
+import { getTranslations } from "next-intl/server"
 
 export const dynamic = "force-dynamic"
 
@@ -22,15 +23,16 @@ interface ChildGradeItem {
 
 export default async function ParentGradesPage() {
   const ctx = await requirePermission(Permissions.GRADE_RECORD_READ)
+  const t = await getTranslations("grades")
 
   if (ctx.dataScope.type !== "children" || ctx.dataScope.childrenIds.length === 0) {
     return (
       <ParentNoChildrenPage
-        title="Children Grades"
-        description="View your children's grade records."
+        title={t("parent.title")}
+        description={t("parent.description")}
         icon={GraduationCap}
-        emptyTitle="No children linked"
-        emptyDescription="Your account is not linked to any student accounts yet. Please contact the school administrator."
+        emptyTitle={t("parent.noChildren")}
+        emptyDescription={t("parent.noChildrenDesc")}
       />
     )
   }
@@ -64,11 +66,11 @@ export default async function ParentGradesPage() {
 
   return (
     <ParentChildrenDataPage
-      title="Children Grades"
-      description="Compare grades across all your children. For single-child analysis, open the child's detail page."
+      title={t("parent.title")}
+      description={t("parent.description")}
       icon={GraduationCap}
-      noRecordsTitle="No grade records"
-      noRecordsDescription="Your children don't have any grade records yet."
+      noRecordsTitle={t("parent.noGrades")}
+      noRecordsDescription={t("parent.noGradesDesc")}
       items={validItems}
       renderItem={({ studentId, summary, classAverageTrend }) => (
         <>