Isometric icon stack

<!--
  Адаптировано (docs/PORTING.md §5): `IconPlaceholder` заменён инлайновым
  `<svg>` (путь lucide "layers"), тем же, что и в React-эталоне.
-->
<script setup lang="ts">
import { IconStack } from "@/components/reui/icon-stack"
</script>

<template>
  <div class="flex items-center justify-center">
    <IconStack aria-hidden="true">
      <svg
        xmlns="http://www.w3.org/2000/svg"
        width="24"
        height="24"
        viewBox="0 0 24 24"
        fill="none"
        stroke="currentColor"
        stroke-width="2"
        stroke-linecap="round"
        stroke-linejoin="round"
        aria-hidden="true"
        class="size-4"
      >
        <path
          d="M12.83 2.18a2 2 0 0 0-1.66 0L2.6 6.08a1 1 0 0 0 0 1.83l8.58 3.91a2 2 0 0 0 1.66 0l8.58-3.9a1 1 0 0 0 0-1.83z"
        />
        <path d="M2 12a1 1 0 0 0 .58.91l8.6 3.91a2 2 0 0 0 1.65 0l8.58-3.9A1 1 0 0 0 22 12" />
        <path d="M2 17a1 1 0 0 0 .58.91l8.6 3.91a2 2 0 0 0 1.65 0l8.58-3.9A1 1 0 0 0 22 17" />
      </svg>
    </IconStack>
  </div>
</template>