huge upgrade to theme and pagefind search bar.

themes/hugo-book.backup/layouts/_shortcodes/hint.html

@@ -0,0 +1,11 @@
+{{- warnf "Hint shortcode is deprecated, use markdown alerts format: '> [!NOTE] ...'" -}}
+{{- $attributes := partial "docs/text/mapper" (dict
+  "attributes" (cond .IsNamedParams .Params dict)
+  "merge" (dict
+    "class" (slice "book-hint" (or (.Get 0) "default"))
+  )
+) -}}
+<blockquote {{ partial "docs/html-attrs" $attributes | safeHTMLAttr }}>
+{{ .Inner | safeHTML -}}
+</blockquote>
+{{- /* remove whitespaces */ -}}