feat(nav): finish remaining parity gaps (image_select, AJAX search, senior UI)

- Layout image_select previews (zibll PNGs under assets/images/header-layout)
- Localize aksrtAdminData.themeUri for admin SPA asset URLs
- Layout-2 inline search AJAX suggestions via aksrt_search_suggestions
- Appearance→Menus visual senior submenu editor (cards/columns)
- Acceptance checklist + automated source contract report

src/AKSRT/Core/ScriptsPart1b.php

@@ -161,7 +161,19 @@ trait ScriptsPart1b {
             );
         }
 
-        $hmb_js = get_template_directory() . '/assets/js/header-newadd.js';
+        
+        $inline_search_js = get_template_directory() . '/assets/js/header-inline-search.js';
+        if (file_exists($inline_search_js)) {
+            wp_enqueue_script(
+                'aksrt-header-inline-search',
+                $base_uri . '/assets/js/header-inline-search.js',
+                [],
+                (string) filemtime($inline_search_js),
+                true
+            );
+        }
+
+$hmb_js = get_template_directory() . '/assets/js/header-newadd.js';
         if (file_exists($hmb_js)) {
             wp_enqueue_script(
                 'aksrt-header-newadd',