feat: add layouts for the HardenedPass docs section

Sidebar with the page tree and table of contents, collapsing into native
details elements on mobile, and prev/next links that follow one reading
order across subsections. The section joins the search index.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/layouts/partials/docs-nav.html b/layouts/partials/docs-nav.html
new file mode 100644
index 0000000..80dc381
--- /dev/null
+++ b/layouts/partials/docs-nav.html
@@ -0,0 +1,25 @@
+{{/* The tree and table of contents render twice, so Hugo's id on the table of contents goes. */}}
+{{ $toc := replace .TableOfContents ` id="TableOfContents"` "" | safeHTML }}
+{{ $hasToc := gt (len .Fragments.Headings) 0 }}
+<div class="lg:hidden mb-8 space-y-2">
+  <details class="border border-border p-3">
+    <summary class="font-mono cursor-pointer">{{ i18n "docsMenu" }}</summary>
+    <div class="mt-3">{{ partial "docs-tree.html" . }}</div>
+  </details>
+  {{ if $hasToc }}
+  <details class="border border-border p-3">
+    <summary class="font-mono cursor-pointer">{{ i18n "docsOnThisPage" }}</summary>
+    <div class="mt-3 text-sm text-text-dim">{{ $toc }}</div>
+  </details>
+  {{ end }}
+</div>
+<aside class="hidden lg:block lg:sticky lg:top-24 lg:self-start lg:max-h-[calc(100vh-7rem)] lg:overflow-y-auto"
+       aria-label="{{ i18n "docsMenu" }}">
+  {{ partial "docs-tree.html" . }}
+  {{ if $hasToc }}
+  <div class="mt-8 border-t border-border pt-4 text-sm text-text-dim">
+    <p class="font-mono text-accent mb-2">{{ i18n "docsOnThisPage" }}</p>
+    {{ $toc }}
+  </div>
+  {{ end }}
+</aside>