{{- /*
  Resolve taxonomy icon by slot with site-level overrides.

  @param {String} .Taxonomy taxonomy singular key, e.g. "tag", "category"
  @param {String} .Slot icon slot: "title", "card", "term"
  @return {String} icon class
*/ -}}
{{- $taxonomy := .Taxonomy | default "category" -}}
{{- $slot := .Slot | default "title" -}}
{{- $defaults := dict
  "tag" (slice "fa-solid fa-tags" "fa-solid fa-tag" "fa-solid fa-tag")
  "category" (slice "fa-solid fa-folder-tree" "fa-regular fa-folder" "fa-regular fa-folder-open")
  "collection" (slice "fa-solid fa-layer-group" "fa-solid fa-layer-group" "fa-solid fa-layer-group")
-}}
{{- $fallback := index $defaults "category" -}}
{{- $icons := index $defaults $taxonomy | default $fallback -}}
{{- with index site.Params "taxonomy_icons" -}}
  {{- with index . $taxonomy -}}
    {{- $icons = . | default $icons -}}
  {{- end -}}
{{- end -}}
{{- $slotIndex := index (dict "title" 0 "card" 1 "term" 2) $slot | default 0 -}}
{{- $icon := index $icons $slotIndex | default (index $fallback $slotIndex) -}}
{{- return $icon -}}