feat(tailwind): port TOC shortcode

modules/blox-tailwind/assets/css/components/page.css

@@ -84,3 +84,8 @@
 .backlink {
   @apply text-xs font-medium text-gray-500 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-100 contrast-more:text-gray-800 contrast-more:dark:text-gray-50;
 }
+
+/* For ToC shortcode, Spoiler shortcode, and direct HTML Details snippets. */
+details > summary {
+  @apply cursor-pointer font-semibold text-primary-700 dark:text-primary-300;
+}

modules/blox-tailwind/layouts/partials/init.html

@@ -1,5 +1,6 @@
 {{/* Workaround Hugo concurrency issues (e.g. not detecting Page.Store variables) */}}
-{{/* https://discourse.gohugo.io/t/persisting-data-across-the-build-of-a-site/41114/6 */}}
+{{/* Use cases: Page.Store use within shortcodes, blox, and backlinks. */}}
+{{/* See https://discourse.gohugo.io/t/persisting-data-across-the-build-of-a-site/41114/6 */}}
 {{- range $page := site.AllPages }}
   {{- $noop := .Content }}
   {{ if eq .Type "landing" }}

modules/blox-tailwind/layouts/shortcodes/spoiler.html

@@ -1,5 +1,5 @@
 {{/*
-    Docs: https://docs.hugoblox.com/content/writing-markdown-latex/#toggle-list
+    Docs: https://docs.hugoblox.com/reference/markdown/#toggle-lists
 
     Parameters
     ----------

modules/blox-tailwind/layouts/shortcodes/toc.html

@@ -0,0 +1,18 @@
+{{/*
+    Docs: https://docs.hugoblox.com/reference/markdown/#table-of-contents
+
+    Parameters
+    ----------
+    mobile_only : true/false (optional)
+        Hide TOC on desktop when TOC is shown in right sidebar?
+    is_open : true/false (optional)
+        Show the TOC in the open, expanded state?
+*/}}
+{{ $mobile_only := .Get "mobile_only" | default true }}
+{{ $is_open := .Get "is_open" | default false }}
+<details class="print:hidden {{with $mobile_only}}xl:hidden{{end}}" {{with $is_open}}open{{end}}>
+  <summary>{{ i18n "table_of_contents" }}</summary>
+  <div class="text-sm">
+  {{ $.Page.TableOfContents }}
+  </div>
+</details>