CngxTocItemSlot

Per-item template slot for CngxToc. Project an <ng-template cngxTocItem> inside <cngx-toc> to replace the built-in plain-label rendering with custom markup - the let- variables come out typed via ngTemplateContextGuard:

<cngx-toc [items]="toc" contentRoot="#article">
  <ng-template cngxTocItem let-item let-active="active" let-depth="depth">
    <span [class.is-active]="active">{{ item.label }}</span>
    @if (depth === 0) { <cngx-badge>{{ item.children?.length }}</cngx-badge> }
  </ng-template>
</cngx-toc>

Named CngxTocItemSlot (not *Directive) per the repo's no-artifact-suffix rule; the selector stays cngxTocItem, which is what consumers write. Resolves ahead of CNGX_TOC_CONFIG.templates.item and the built-in label.

https://cngxjs.github.io/cngx/examples/#/ui/toc/slots/custom-item-template