feat(app): add error/loading boundaries across all dashboard routes and new routes

- Add error.tsx and loading.tsx boundaries for admin, parent, student, teacher routes

- Add admin announcements edit, audit-logs overview, curriculum-map, invitation-codes, permissions, questions, roles routes

- Add admin elective detail and components, files, course-plans, users, scheduling boundaries

- Add messages group-compose route

- Add parent course-plans, elective, grades report-card, practice routes

- Add student course-plans, elective detail, error-book dialogs, grades report-card, learning study-path, leave, schedule boundaries

- Add teacher attendance report, classes boundaries, course-plans boundaries, elective, exams analytics/edit-rich/all/create/new, grades report-card, homework boundaries, leave, lesson-plans calendar

- Add auth loading, onboarding loading, api cron

src/app/(dashboard)/teacher/elective/[id]/edit/loading.tsx

@@ -0,0 +1,27 @@
+import { Card, CardContent, CardHeader } from "@/shared/components/ui/card"
+import { Skeleton } from "@/shared/components/ui/skeleton"
+
+export default function Loading() {
+  return (
+    <div className="flex h-full flex-col space-y-8 p-8">
+      <div className="space-y-2">
+        <Skeleton className="h-8 w-48" />
+        <Skeleton className="h-4 w-64" />
+      </div>
+      <Card>
+        <CardHeader>
+          <Skeleton className="h-5 w-32" />
+        </CardHeader>
+        <CardContent className="space-y-4">
+          {Array.from({ length: 6 }).map((_, i) => (
+            <div key={i} className="space-y-2">
+              <Skeleton className="h-4 w-24" />
+              <Skeleton className="h-9 w-full" />
+            </div>
+          ))}
+          <Skeleton className="h-10 w-32" />
+        </CardContent>
+      </Card>
+    </div>
+  )
+}

src/app/(dashboard)/teacher/elective/[id]/edit/page.tsx

@@ -0,0 +1,52 @@
+import { notFound } from "next/navigation"
+import type { JSX } from "react"
+import { getTranslations } from "next-intl/server"
+
+import { requirePermission } from "@/shared/lib/auth-guard"
+import { Permissions } from "@/shared/types/permissions"
+import { getElectiveCourseById } from "@/modules/elective/data-access"
+import { getGrades, getStaffOptions, getSubjectOptions } from "@/modules/school/data-access"
+import { ElectiveCourseForm } from "@/modules/elective/components/elective-course-form"
+
+export const dynamic = "force-dynamic"
+
+export default async function TeacherEditElectiveCoursePage({
+  params,
+}: {
+  params: Promise<{ id: string }>
+}): Promise<JSX.Element> {
+  const t = await getTranslations("elective")
+  const ctx = await requirePermission(Permissions.ELECTIVE_MANAGE)
+  const { id } = await params
+
+  const [course, subjects, grades, teachers] = await Promise.all([
+    getElectiveCourseById(id),
+    getSubjectOptions(),
+    getGrades(),
+    getStaffOptions(),
+  ])
+
+  if (!course) notFound()
+
+  // 教师只能编辑自己教授的课程（防止跨教师越权编辑）
+  if (course.teacherId && course.teacherId !== ctx.userId) {
+    notFound()
+  }
+
+  return (
+    <div className="flex h-full flex-col space-y-8 p-8">
+      <div>
+        <h2 className="text-2xl font-bold tracking-tight">{t("title.edit")}</h2>
+        <p className="text-muted-foreground">{t("description.edit")}</p>
+      </div>
+      <ElectiveCourseForm
+        mode="edit"
+        course={course}
+        subjects={subjects}
+        grades={grades.map((g) => ({ id: g.id, name: g.name }))}
+        teachers={teachers.map((teacher) => ({ id: teacher.id, name: teacher.name }))}
+        backHref="/teacher/elective"
+      />
+    </div>
+  )
+}

src/app/(dashboard)/teacher/elective/create/loading.tsx

@@ -0,0 +1,27 @@
+import { Card, CardContent, CardHeader } from "@/shared/components/ui/card"
+import { Skeleton } from "@/shared/components/ui/skeleton"
+
+export default function Loading() {
+  return (
+    <div className="flex h-full flex-col space-y-8 p-8">
+      <div className="space-y-2">
+        <Skeleton className="h-8 w-48" />
+        <Skeleton className="h-4 w-64" />
+      </div>
+      <Card>
+        <CardHeader>
+          <Skeleton className="h-5 w-32" />
+        </CardHeader>
+        <CardContent className="space-y-4">
+          {Array.from({ length: 6 }).map((_, i) => (
+            <div key={i} className="space-y-2">
+              <Skeleton className="h-4 w-24" />
+              <Skeleton className="h-9 w-full" />
+            </div>
+          ))}
+          <Skeleton className="h-10 w-32" />
+        </CardContent>
+      </Card>
+    </div>
+  )
+}

src/app/(dashboard)/teacher/elective/create/page.tsx

@@ -0,0 +1,36 @@
+import type { JSX } from "react"
+import { getTranslations } from "next-intl/server"
+
+import { requirePermission } from "@/shared/lib/auth-guard"
+import { Permissions } from "@/shared/types/permissions"
+import { getGrades, getStaffOptions, getSubjectOptions } from "@/modules/school/data-access"
+import { ElectiveCourseForm } from "@/modules/elective/components/elective-course-form"
+
+export const dynamic = "force-dynamic"
+
+export default async function TeacherCreateElectiveCoursePage(): Promise<JSX.Element> {
+  const t = await getTranslations("elective")
+  await requirePermission(Permissions.ELECTIVE_MANAGE)
+
+  const [subjects, grades, teachers] = await Promise.all([
+    getSubjectOptions(),
+    getGrades(),
+    getStaffOptions(),
+  ])
+
+  return (
+    <div className="flex h-full flex-col space-y-8 p-8">
+      <div>
+        <h2 className="text-2xl font-bold tracking-tight">{t("title.create")}</h2>
+        <p className="text-muted-foreground">{t("description.create")}</p>
+      </div>
+      <ElectiveCourseForm
+        mode="create"
+        subjects={subjects}
+        grades={grades.map((g) => ({ id: g.id, name: g.name }))}
+        teachers={teachers.map((teacher) => ({ id: teacher.id, name: teacher.name }))}
+        backHref="/teacher/elective"
+      />
+    </div>
+  )
+}

src/app/(dashboard)/teacher/elective/error.tsx

@@ -11,10 +11,10 @@ export default function TeacherElectiveError({ reset }: { error: Error & { diges
     <div className="flex h-full flex-col items-center justify-center space-y-4 p-8">
       <EmptyState
         icon={AlertCircle}
-        title={t("errors.unexpected")}
-        description={t("errors.unexpected")}
+        title={t("errors.title")}
+        description={t("errors.description")}
         action={{
-          label: t("actions.save"),
+          label: t("actions.retry"),
           onClick: () => reset(),
         }}
         className="border-none shadow-none h-auto"

src/app/(dashboard)/teacher/elective/page.tsx

@@ -50,8 +50,8 @@ export default async function TeacherElectivePage({
       <ElectiveCourseList
         courses={courses}
         canManage
-        createHref="/admin/elective/create"
-        editBaseHref="/admin/elective"
+        createHref="/teacher/elective/create"
+        editBaseHref="/teacher/elective"
       />
     </ElectivePageLayout>
   )