feat(frontend): adopt zibll site-layout-1/2/3 float dual-column system

Wire settings-driven sidebar visibility and body site-layout classes,
replace content-layout CSS grid with Zibll float geometry, move sidebar
DOM to content-wrap sibling across single/archive/page/home, and add
post meta show_layout overrides.

inc/helpers/aksrt-homepage.php

@@ -532,6 +532,9 @@ if (!function_exists('aksrt_homepage_has_sidebar')) {
 	 * Whether the fixed homepage should render an aside column.
 	 */
 	function aksrt_homepage_has_sidebar(): bool {
+		if (function_exists('aksrt_is_show_sidebar')) {
+			return aksrt_is_show_sidebar();
+		}
 		return aksrt_homepage_has_active_sidebars([
 			'all_sidebar_top',
 			'home_sidebar',
@@ -986,10 +989,10 @@ if (!function_exists('aksrt_homepage_render_layout')) {
 						);
 						?>
 					</div>
-
-					<?php aksrt_homepage_render_sidebar(); ?>
 				</div>
 			</div>
+
+			<?php aksrt_homepage_render_sidebar(); ?>
 		</main>
 		<?php
 		aksrt_homepage_render_widget_zone(