feat: add search and filter to admin pages

- Add search and filter (type, status) to AdminProducts
- Add search to AdminBootcamp
- Change mobile admin nav "Pesanan" to "Order"
- Show result counts for filtered data
- Handle empty states with helpful messages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/AppLayout.tsx

@@ -62,7 +62,7 @@ const mobileUserNav: NavItem[] = [
 const mobileAdminNav: NavItem[] = [
   { label: 'Dashboard', href: '/admin', icon: LayoutDashboard },
   { label: 'Produk', href: '/admin/products', icon: Package },
-  { label: 'Pesanan', href: '/admin/orders', icon: Receipt },
+  { label: 'Order', href: '/admin/orders', icon: Receipt },
   { label: 'Pengguna', href: '/admin/members', icon: Users },
 ];