Site: how-tos and the FAQ (phase 3)

Eight how-to recipes and a FAQ page with a list of its questions, from the
README, the milestone documents and the Apps' source. The guide templates
become generic (the parent section gives the eyebrow, title and pager).

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

site/templates/guide-index.html

@@ -4,7 +4,7 @@
 {% block main %}
 <div class="wrap page">
   <header>
-    <span class="eyebrow">User guide</span>
+    <span class="eyebrow">{% if section.extra.eyebrow %}{{ section.extra.eyebrow }}{% else %}User guide{% endif %}</span>
     <h1>{{ section.title }}</h1>
     <p class="lead">{{ section.description }}</p>
   </header>