Checkbox Select File Tree

<!-- A folder's checkbox is DERIVED from its files, never stored: all leaves
     checked => checked, some => indeterminate. Indeterminate has no HTML
     attribute; it is set on the DOM node in JS, so this static snapshot shows
     the checked and unchecked states only. -->
<nav class="w-full max-w-sm rounded-xl border border-gray-200 bg-white p-2 text-sm text-gray-700 dark:border-gray-800 dark:bg-gray-950 dark:text-gray-300">
  <ul role="tree" aria-label="Select files" aria-multiselectable="true" class="space-y-0.5">
    <li role="treeitem" aria-expanded="true" aria-checked="false">
      <div class="flex min-w-0 items-center gap-1.5 rounded-md px-2 py-1.5 hover:bg-gray-100 dark:hover:bg-gray-900">
        <input type="checkbox" aria-label="assets" class="h-4 w-4 shrink-0 rounded border-gray-300 text-blue-600 dark:border-gray-700 dark:bg-gray-900" />
        <button type="button" class="flex min-w-0 flex-1 items-center gap-1.5 text-left">
          <svg viewBox="0 0 16 16" fill="currentColor" class="h-3.5 w-3.5 shrink-0 rotate-90 text-gray-400" aria-hidden="true"><path d="M6 4l4 4-4 4z"/></svg>
          <svg viewBox="0 0 16 16" fill="currentColor" class="h-4 w-4 shrink-0 text-blue-500" aria-hidden="true"><path d="M1.5 4A1.5 1.5 0 0 1 3 2.5h3L7.5 4H13A1.5 1.5 0 0 1 14.5 5.5v6A1.5 1.5 0 0 1 13 13H3a1.5 1.5 0 0 1-1.5-1.5z"/></svg>
          <span class="truncate font-medium text-gray-900 dark:text-gray-100">assets</span>
        </button>
      </div>
      <ul role="group" class="ml-3 space-y-0.5 border-l border-gray-200 pl-2 sm:ml-4 dark:border-gray-800">
        <li role="treeitem" aria-checked="false"><div class="flex min-w-0 items-center gap-1.5 rounded-md px-2 py-1.5 hover:bg-gray-100 dark:hover:bg-gray-900"><input type="checkbox" aria-label="logo.svg" class="h-4 w-4 shrink-0 rounded border-gray-300 text-blue-600 dark:border-gray-700 dark:bg-gray-900" /><span class="w-3.5 shrink-0"></span><svg viewBox="0 0 16 16" fill="currentColor" class="h-4 w-4 shrink-0 text-gray-400" aria-hidden="true"><path d="M4 1.5h4.6L13 5.9V14a.5.5 0 0 1-.5.5h-8A.5.5 0 0 1 4 14V2a.5.5 0 0 1 .5-.5z"/></svg><span class="truncate">logo.svg</span></div></li>
      </ul>
    </li>
  </ul>
</nav>