v1.0.0 - Release: widget area, documentation refresh

- Register sidebar widget area via register_sidebar()
- Render WordPress widgets in Twig sidebar with fallback to built-in content
- Update README.md with accurate feature counts and descriptions
- Update translation files with widget area strings
- Bump version to 1.0.0

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

inc/Template/ContextBuilder.php

@@ -387,12 +387,26 @@ class ContextBuilder
 
     /**
      * Get sidebar widget data.
+     *
+     * If the 'primary-sidebar' widget area has widgets assigned,
+     * their rendered HTML is returned. Otherwise, fallback data
+     * (recent posts, tags) is provided for the default Twig sidebar.
      */
     private function getSidebarData(): array
     {
+        $widgets_active = is_active_sidebar( 'primary-sidebar' );
+        $widgets_html   = '';
+        if ( $widgets_active ) {
+            ob_start();
+            dynamic_sidebar( 'primary-sidebar' );
+            $widgets_html = ob_get_clean();
+        }
+
         return [
-            'recent_posts' => $this->getSidebarRecentPosts(),
-            'tags'         => $this->getSidebarTags(),
+            'widgets_active' => $widgets_active,
+            'widgets_html'   => $widgets_html,
+            'recent_posts'   => $this->getSidebarRecentPosts(),
+            'tags'           => $this->getSidebarTags(),
         ];
     }