feat: wire homepage builder layout system and sidebar control

- base.njk: skip hardcoded sidebar when homepage builder is active
- homepage-builder.njk: implement 3 layouts (single-column, two-column,
  full-width-hero) with CSS grid and sidebar rendering
- homepage-section.njk: section type dispatcher (extracted for reuse)
- homepage-sidebar.njk: maps widget types to existing widget partials

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

_includes/components/homepage-builder.njk

@@ -1,45 +1,83 @@
 {#
-  Homepage Builder - renders configured sections from homepageConfig
+  Homepage Builder - renders configured layout, sections, and sidebar
-  Used when indiekit-endpoint-homepage plugin is installed and configured
+  from homepageConfig (written by indiekit-endpoint-homepage plugin)
 #}
 
+{% set layout = homepageConfig.layout or "two-column" %}
+{% set hasSidebar = homepageConfig.sidebar and homepageConfig.sidebar.length %}
+
+{# Hero — rendered before layout wrapper when enabled #}
 {% if homepageConfig.hero and homepageConfig.hero.enabled %}
   {% include "components/sections/hero.njk" %}
 {% endif %}
 
-<div class="homepage-sections">
+{# Layout wrapper #}
+{% if layout == "single-column" %}
+
+  {# Single column — no sidebar, full width sections #}
+  <div class="homepage-sections">
     {% for section in homepageConfig.sections %}
-    {% if section.type == "hero" %}
+      {% if section.type != "hero" %}
-      {# Hero is handled above #}
+        {% include "components/homepage-section.njk" %}
-    {% elif section.type == "recent-posts" %}
-      {% include "components/sections/recent-posts.njk" %}
-    {% elif section.type == "custom-html" %}
-      {% include "components/sections/custom-html.njk" %}
-    {% elif section.type == "cv-experience" %}
-      {% include "components/sections/cv-experience.njk" ignore missing %}
-    {% elif section.type == "cv-projects" %}
-      {% include "components/sections/cv-projects.njk" ignore missing %}
-    {% elif section.type == "cv-skills" %}
-      {% include "components/sections/cv-skills.njk" ignore missing %}
-    {% elif section.type == "cv-education" %}
-      {% include "components/sections/cv-education.njk" ignore missing %}
-    {% elif section.type == "cv-interests" %}
-      {% include "components/sections/cv-interests.njk" ignore missing %}
-    {% elif section.type == "blogroll" %}
-      {% include "components/sections/blogroll.njk" ignore missing %}
-    {% elif section.type == "podroll" %}
-      {% include "components/sections/podroll.njk" ignore missing %}
-    {% elif section.type == "github-activity" %}
-      {% include "components/sections/github-activity.njk" ignore missing %}
-    {% elif section.type == "youtube" %}
-      {% include "components/sections/youtube.njk" ignore missing %}
-    {% elif section.type == "funkwhale" %}
-      {% include "components/sections/funkwhale.njk" ignore missing %}
-    {% elif section.type == "lastfm" %}
-      {% include "components/sections/lastfm.njk" ignore missing %}
-    {% else %}
-      {# Unknown section type - log warning #}
-      <!-- Unknown section type: {{ section.type }} -->
       {% endif %}
     {% endfor %}
-</div>
+  </div>
+
+{% elif layout == "two-column" and hasSidebar %}
+
+  {# Two column — sections + sidebar #}
+  <div class="layout-with-sidebar">
+    <div class="main-content">
+      <div class="homepage-sections">
+        {% for section in homepageConfig.sections %}
+          {% if section.type != "hero" %}
+            {% include "components/homepage-section.njk" %}
+          {% endif %}
+        {% endfor %}
+      </div>
+    </div>
+    <aside class="sidebar" data-pagefind-ignore>
+      {% include "components/homepage-sidebar.njk" %}
+    </aside>
+  </div>
+
+{% elif layout == "full-width-hero" %}
+
+  {# Full width hero (already rendered above), then two-column below #}
+  {% if hasSidebar %}
+  <div class="layout-with-sidebar">
+    <div class="main-content">
+      <div class="homepage-sections">
+        {% for section in homepageConfig.sections %}
+          {% if section.type != "hero" %}
+            {% include "components/homepage-section.njk" %}
+          {% endif %}
+        {% endfor %}
+      </div>
+    </div>
+    <aside class="sidebar" data-pagefind-ignore>
+      {% include "components/homepage-sidebar.njk" %}
+    </aside>
+  </div>
+  {% else %}
+  <div class="homepage-sections">
+    {% for section in homepageConfig.sections %}
+      {% if section.type != "hero" %}
+        {% include "components/homepage-section.njk" %}
+      {% endif %}
+    {% endfor %}
+  </div>
+  {% endif %}
+
+{% else %}
+
+  {# Fallback — two-column without sidebar, or unknown layout #}
+  <div class="homepage-sections">
+    {% for section in homepageConfig.sections %}
+      {% if section.type != "hero" %}
+        {% include "components/homepage-section.njk" %}
+      {% endif %}
+    {% endfor %}
+  </div>
+
+{% endif %}

_includes/components/homepage-section.njk

@@ -0,0 +1,30 @@
+{# Homepage Section Dispatcher — maps section.type to the right partial #}
+{% if section.type == "recent-posts" %}
+  {% include "components/sections/recent-posts.njk" %}
+{% elif section.type == "custom-html" %}
+  {% include "components/sections/custom-html.njk" %}
+{% elif section.type == "cv-experience" %}
+  {% include "components/sections/cv-experience.njk" ignore missing %}
+{% elif section.type == "cv-projects" %}
+  {% include "components/sections/cv-projects.njk" ignore missing %}
+{% elif section.type == "cv-skills" %}
+  {% include "components/sections/cv-skills.njk" ignore missing %}
+{% elif section.type == "cv-education" %}
+  {% include "components/sections/cv-education.njk" ignore missing %}
+{% elif section.type == "cv-interests" %}
+  {% include "components/sections/cv-interests.njk" ignore missing %}
+{% elif section.type == "blogroll" %}
+  {% include "components/sections/blogroll.njk" ignore missing %}
+{% elif section.type == "podroll" %}
+  {% include "components/sections/podroll.njk" ignore missing %}
+{% elif section.type == "github-activity" %}
+  {% include "components/sections/github-activity.njk" ignore missing %}
+{% elif section.type == "youtube" %}
+  {% include "components/sections/youtube.njk" ignore missing %}
+{% elif section.type == "funkwhale" %}
+  {% include "components/sections/funkwhale.njk" ignore missing %}
+{% elif section.type == "lastfm" %}
+  {% include "components/sections/lastfm.njk" ignore missing %}
+{% else %}
+  <!-- Unknown section type: {{ section.type }} -->
+{% endif %}

_includes/components/homepage-sidebar.njk

@@ -0,0 +1,28 @@
+{# Homepage Builder Sidebar — renders widgets from homepageConfig.sidebar #}
+{% if homepageConfig.sidebar and homepageConfig.sidebar.length %}
+  {% for widget in homepageConfig.sidebar %}
+    {% if widget.type == "author-card" %}
+      {% include "components/widgets/author-card.njk" %}
+    {% elif widget.type == "social-activity" %}
+      {% include "components/widgets/social-activity.njk" %}
+    {% elif widget.type == "github-repos" %}
+      {% include "components/widgets/github-repos.njk" %}
+    {% elif widget.type == "funkwhale" %}
+      {% include "components/widgets/funkwhale.njk" %}
+    {% elif widget.type == "recent-posts" %}
+      {% include "components/widgets/recent-posts.njk" %}
+    {% elif widget.type == "blogroll" %}
+      {% include "components/widgets/blogroll.njk" %}
+    {% elif widget.type == "categories" %}
+      {% include "components/widgets/categories.njk" %}
+    {% elif widget.type == "search" %}
+      {# Pagefind search widget #}
+      <div class="sidebar-widget">
+        <h3 class="text-sm font-semibold text-surface-600 dark:text-surface-400 uppercase tracking-wide mb-3">Search</h3>
+        <div id="search"></div>
+      </div>
+    {% else %}
+      <!-- Unknown widget type: {{ widget.type }} -->
+    {% endif %}
+  {% endfor %}
+{% endif %}

_includes/layouts/base.njk

@@ -270,7 +270,7 @@
   </header>
 
   <main class="container py-8" data-pagefind-body>
-    {% if withSidebar %}
+    {% if withSidebar and not (homepageConfig and homepageConfig.sections) %}
     <div class="layout-with-sidebar">
       <div class="main-content">
         {{ content | safe }}
@@ -279,6 +279,9 @@
         {% include "components/sidebar.njk" %}
       </aside>
     </div>
+    {% elif withSidebar and homepageConfig and homepageConfig.sections %}
+    {# Homepage builder controls its own layout and sidebar #}
+    {{ content | safe }}
     {% elif withBlogSidebar %}
     <div class="layout-with-sidebar">
       <div class="main-content">