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/elective/error.tsx

@@ -14,7 +14,7 @@ export default function StudentElectiveError({ reset }: { error: Error & { diges
         title={t("errors.unexpected")}
         description={t("errors.unexpected")}
         action={{
-          label: t("actions.save"),
+          label: t("actions.retry"),
           onClick: () => reset(),
         }}
         className="border-none shadow-none h-auto"