ver. 0.289: ShopCategory + ShopClient frontend migration to Domain + Views + Controllers

ShopCategory: 9 frontend methods in CategoryRepository, front\Views\ShopCategory (3 methods),
deleted factory + view, updated 6 callers, +17 tests.

ShopClient: 13 frontend methods in ClientRepository, front\Views\ShopClient (8 methods),
front\Controllers\ShopClientController (15 methods + buildEmailBody helper),
deleted factory + view + controls, updated 7 callers, +36 tests.

Security fix: removed hardcoded password bypass 'Legia1916'.

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

index.php

@@ -221,7 +221,7 @@ if ( $settings[ 'piksel' ] )
       "track",
       "ViewCategory", {
         content_category: "kategoria",
-        content_name: "' . htmlspecialchars( str_replace( '"', '', \front\factory\ShopCategory::category_name( $category[ 'id' ] ) ) ) . '",
+        content_name: "' . htmlspecialchars( str_replace( '"', '', ( new \Domain\Category\CategoryRepository( $GLOBALS['mdb'] ) )->categoryName( (int)$category['id'], $lang_id ) ) ) . '",
         content_ids: ["' . implode( ',', \shop\Category::get_category_products_id( $category['id'] ) ) . '"],
         content_type: "product"
       });';