ver. 0.287: Scontainers + ShopAttribute frontend migration to Domain

- Scontainers: frontScontainerDetails() with Redis cache in ScontainersRepository
- Scontainers: new front\Views\Scontainers VIEW, deleted factory + view legacy
- ShopAttribute: frontAttributeDetails(), frontValueDetails() with Redis cache in AttributeRepository
- ShopAttribute: clearFrontCache() per attribute/value + language
- ShopAttribute: deleted front\factory\ShopAttribute, updated 4 callers
- Tests: 476 OK, 1512 assertions (+6 frontend tests)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

autoload/front/Views/Scontainers.php

@@ -0,0 +1,12 @@
+<?php
+namespace front\Views;
+
+class Scontainers
+{
+    public static function scontainer( $scontainer )
+    {
+        $tpl = new \Shared\Tpl\Tpl;
+        $tpl->scontainer = $scontainer;
+        return $tpl->render( 'scontainers/scontainer' );
+    }
+}