refactor(modules): update classes, course-plans, diagnostic, questions, settings, student, layout

- Update classes data-access (invitations, main) for invitation management

- Update course-plans actions, data-access, and types

- Update diagnostic data-access for report queries

- Update questions data-access for question bank queries

- Update settings actions, ai-provider-settings-card, data-access, and types

- Update student course-filters, student-courses-view, student-schedule-filters, student-schedule-view

- Update layout app-sidebar, site-header, and navigation config

src/modules/student/components/student-schedule-view.tsx

@@ -3,17 +3,18 @@ import { EmptyState } from "@/shared/components/ui/empty-state"
 import { CalendarX } from "lucide-react"
 import { ScheduleList } from "@/shared/components/schedule/schedule-list"
 import { cn } from "@/shared/lib/utils"
+import { useTranslations } from "next-intl"
 
 import type { StudentScheduleItem } from "@/modules/classes/types"
 
-const WEEKDAYS: Array<{ key: 1 | 2 | 3 | 4 | 5 | 6 | 7; label: string }> = [
-  { key: 1, label: "Mon" },
-  { key: 2, label: "Tue" },
-  { key: 3, label: "Wed" },
-  { key: 4, label: "Thu" },
-  { key: 5, label: "Fri" },
-  { key: 6, label: "Sat" },
-  { key: 7, label: "Sun" },
+const WEEKDAY_KEYS: Array<{ key: 1 | 2 | 3 | 4 | 5 | 6 | 7; label: string }> = [
+  { key: 1, label: "mon" },
+  { key: 2, label: "tue" },
+  { key: 3, label: "wed" },
+  { key: 4, label: "thu" },
+  { key: 5, label: "fri" },
+  { key: 6, label: "sat" },
+  { key: 7, label: "sun" },
 ]
 
 const getTodayWeekday = (): 1 | 2 | 3 | 4 | 5 | 6 | 7 => {
@@ -27,12 +28,14 @@ const getTodayWeekday = (): 1 | 2 | 3 | 4 | 5 | 6 | 7 => {
 }
 
 export function StudentScheduleView({ items }: { items: StudentScheduleItem[] }) {
+  const t = useTranslations("student")
+
   if (items.length === 0) {
     return (
       <EmptyState
         icon={CalendarX}
-        title="No schedule"
-        description="No timetable entries found for your enrolled classes."
+        title={t("scheduleView.noSchedule")}
+        description={t("scheduleView.noScheduleDesc")}
         className="h-80"
       />
     )
@@ -52,7 +55,7 @@ export function StudentScheduleView({ items }: { items: StudentScheduleItem[] })
 
   return (
     <div className="grid gap-4 lg:grid-cols-2">
-      {WEEKDAYS.map((d) => {
+      {WEEKDAY_KEYS.map((d) => {
         const dayItems = itemsByDay.get(d.key) ?? []
         const isToday = d.key === todayKey
         return (
@@ -64,17 +67,17 @@ export function StudentScheduleView({ items }: { items: StudentScheduleItem[] })
           >
             <CardHeader className="pb-3">
               <CardTitle className="flex items-center gap-2 text-sm font-medium">
-                <span>{d.label}</span>
+                <span>{t(`weekdays.${d.label}`)}</span>
                 {isToday && (
                   <span className="rounded-full bg-primary px-2 py-0.5 text-[10px] font-semibold uppercase tracking-wide text-primary-foreground">
-                    Today
+                    {t("scheduleView.today")}
                   </span>
                 )}
               </CardTitle>
             </CardHeader>
             <CardContent>
               {dayItems.length === 0 ? (
-                <div className="text-sm text-muted-foreground">No classes.</div>
+                <div className="text-sm text-muted-foreground">{t("scheduleView.noClasses")}</div>
               ) : (
                 <ScheduleList
                   items={dayItems.map((item) => ({