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/diagnostic/error.tsx

@@ -1,6 +1,7 @@
 "use client"
 
 import { AlertCircle } from "lucide-react"
+import { useTranslations } from "next-intl"
 
 import { EmptyState } from "@/shared/components/ui/empty-state"
 
@@ -10,14 +11,15 @@ export default function StudentDiagnosticError({
   error: Error & { digest?: string }
   reset: () => void
 }) {
+  const t = useTranslations("student")
   return (
     <div className="flex h-full flex-col items-center justify-center space-y-4 p-8">
       <EmptyState
         icon={AlertCircle}
-        title="学情诊断页面加载失败"
-        description="抱歉，页面加载时发生了意外错误。请稍后重试。"
+        title={t("error.title")}
+        description={t("error.description")}
         action={{
-          label: "重试",
+          label: t("error.retry"),
           onClick: () => reset(),
         }}
         className="border-none shadow-none h-auto"

src/app/(dashboard)/student/diagnostic/page.tsx

@@ -1,4 +1,6 @@
 import { Stethoscope } from "lucide-react"
+import { getTranslations } from "next-intl/server"
+
 import { requirePermission } from "@/shared/lib/auth-guard"
 import { Permissions } from "@/shared/types/permissions"
 import { getStudentMasterySummary } from "@/modules/diagnostic/data-access"
@@ -9,6 +11,7 @@ export const dynamic = "force-dynamic"
 
 export default async function StudentDiagnosticPage() {
   const ctx = await requirePermission(Permissions.DIAGNOSTIC_READ)
+  const t = await getTranslations("student")
 
   const [summary, reportsResult] = await Promise.all([
     getStudentMasterySummary(ctx.userId),
@@ -25,10 +28,10 @@ export default async function StudentDiagnosticPage() {
       <div>
         <h2 className="flex items-center gap-2 text-2xl font-bold tracking-tight">
           <Stethoscope className="h-6 w-6" />
-          My Diagnostic
+          {t("diagnostic.title")}
         </h2>
         <p className="text-muted-foreground">
-          Your knowledge point mastery analysis and diagnostic reports.
+          {t("diagnostic.description")}
         </p>
       </div>
       <StudentDiagnosticView summary={summary} reports={reports} />