fix(homepage): align shell with zibll and restore post stream

Move header-slider outside main, render fluid zones once, default the
latest stream to plain posts by date, and cut dual-render/perf waste so
published posts and hero/banner structure match the zibll contract.

templates/parts/home-modules/module-banner.php

@@ -21,7 +21,19 @@ if (class_exists('AKSRT_Settings') && !AKSRT_Settings::homepage_module_banner_en
 }
 
 $banners = function_exists('aksrt_get_banners') ? aksrt_get_banners(8, 'banner') : [];
-if (empty($banners)) return;
+if (empty($banners)) {
+    if (current_user_can('manage_options')) {
+        echo '<div class="home-module home-module--banner home-module--banner-empty box-body">';
+        echo '<p class="muted-2-color">' . esc_html__('No Banner slides found. Add banner slides in admin.', 'aksrt') . '</p>';
+        if (function_exists('aksrt_render_admin_quick_link')) {
+            echo '<div class="home-module__admin-tools">';
+            aksrt_render_admin_quick_link('page-display/header-components', __('Header / Banner settings', 'aksrt'));
+            echo '</div>';
+        }
+        echo '</div>';
+    }
+    return;
+}
 
 $cfg = get_query_var('aksrt_module_config', []);
 if (!is_array($cfg)) $cfg = [];
@@ -41,9 +53,9 @@ $swiper_config = [
     'spaceBetween'  => ($slider_cfg['space_between'] ?? 0),
 ];
 ?>
-<div class="home-module home-module--banner">
-    <div class="banner-module">
-        <div class="swiper banner-module__swiper" data-swiper-config="<?php echo esc_attr(wp_json_encode($swiper_config)); ?>">
+<div class="home-module home-module--banner slide-widget mb20">
+    <div class="banner-module zib-slider">
+        <div class="swiper new-swiper banner-module__swiper slide-widget-swiper" data-swiper-config="<?php echo esc_attr(wp_json_encode($swiper_config)); ?>">
             <div class="swiper-wrapper">
                 <?php foreach ($banners as $index => $slide) :
                     $device_vis = $slide['device_visibility'] ?? 'all';