fix(header): cache-bust frontend CSS modules via filemtime

header-components used fixed AKSRT_VERSION so card-gap fixes never reached browsers; inline gap rules and filemtime enqueue.

src/AKSRT/Core/ScriptsPart1b.php

@@ -72,11 +72,12 @@ trait ScriptsPart1b {
 
         $deps = [$core_dep];
         $enqueue_module = function ($slug) use ($base_uri, $version, $deps) {
+            $path = get_template_directory() . '/assets/css/frontend/' . $slug . '.css';
             wp_enqueue_style(
                 'aksrt-' . $slug,
                 $base_uri . '/assets/css/frontend/' . $slug . '.css',
                 $deps,
-                $version
+                (file_exists($path) ? (string) filemtime($path) : $version)
             );
         };