feat(classes): optimize teacher dashboard ui and implement grade management

src/modules/dashboard/components/teacher-dashboard/teacher-classes-card.tsx

@@ -1,7 +1,6 @@
 import Link from "next/link"
 import { Users } from "lucide-react"
 
-import { Badge } from "@/shared/components/ui/badge"
 import { Button } from "@/shared/components/ui/button"
 import { Card, CardContent, CardHeader, CardTitle } from "@/shared/components/ui/card"
 import { EmptyState } from "@/shared/components/ui/empty-state"

src/modules/dashboard/components/teacher-dashboard/teacher-stats.tsx

@@ -54,6 +54,7 @@ export function TeacherStats({
       description: "Published and ongoing",
       icon: PenTool,
       href: "/teacher/homework/assignments?status=published",
+      highlight: false,
       color: "text-blue-500",
     },
     {
@@ -62,6 +63,7 @@ export function TeacherStats({
       description: "Across recent assignments",
       icon: TrendingUp,
       href: "#grade-trends",
+      highlight: false,
       color: "text-emerald-500",
     },
     {
@@ -70,6 +72,7 @@ export function TeacherStats({
       description: "Overall completion rate",
       icon: BarChart,
       href: "#grade-trends",
+      highlight: false,
       color: "text-purple-500",
     },
   ] as const;