Удалены неиспользуемые импорты из компонентов, обновлены обработчики событий для улучшения логики работы с чекбоксами. Оптимизированы импорты аватаров в компонентах карточек и иконок для повышения читаемости кода.

src/components/admin/ui-kit-section.tsx

@@ -1,6 +1,6 @@
 "use client"
 
-import { useState } from 'react'
+
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs'
 import { ButtonsDemo } from './ui-kit/buttons-demo'
 import { FormsDemo } from './ui-kit/forms-demo'

src/components/admin/ui-kit/cards-demo.tsx

@@ -3,7 +3,7 @@
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'
-import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
+import { Avatar, AvatarFallback } from '@/components/ui/avatar'
 import { Progress } from '@/components/ui/progress'
 import { 
   Heart, 

src/components/admin/ui-kit/forms-demo.tsx

@@ -222,7 +222,7 @@ export function FormsDemo() {
                 <Checkbox 
                   id="checkbox1" 
                   checked={checkboxValue}
-                  onCheckedChange={setCheckboxValue}
+                  onCheckedChange={(checked) => setCheckboxValue(!!checked)}
                 />
                 <Label 
                   htmlFor="checkbox1" 

src/components/admin/ui-kit/icons-demo.tsx

@@ -1,7 +1,7 @@
 "use client"
 
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
+import { Avatar, AvatarFallback } from '@/components/ui/avatar'
 import { Badge } from '@/components/ui/badge'
 import { Button } from '@/components/ui/button'
 import {