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.tsx

@@ -1,7 +1,9 @@
 "use client"
 
-import { EmptyState } from "@/shared/components/ui/empty-state"
 import { AlertTriangle } from "lucide-react"
+import { useTranslations } from "next-intl"
+
+import { EmptyState } from "@/shared/components/ui/empty-state"
 
 export default function StudentError({
   error,
@@ -10,12 +12,13 @@ export default function StudentError({
   error: Error & { digest?: string }
   reset: () => void
 }) {
+  const t = useTranslations("student")
   return (
     <EmptyState
       icon={AlertTriangle}
-      title="Something went wrong"
-      description={error.message || "An unexpected error occurred. Please try again."}
-      action={{ label: "Try again", onClick: reset }}
+      title={t("error.title")}
+      description={error.message || t("error.description")}
+      action={{ label: t("error.retry"), onClick: reset }}
     />
   )
 }