fix: styled city cards on region pages; regions follow All Tours in the menu

- Region page city list uses the design's destination rail (dcard) instead of
  the unstyled pre-reskin card template
- Header menu: structure regions are inserted after the top-level link to the
  tours archive instead of at the end
- Plugin 1.9.2

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

viator-collector/includes/class-vc-menu.php

@@ -17,12 +17,29 @@ class VC_Menu {
 		if ( empty( $args->theme_location ) || self::LOCATION !== $args->theme_location ) {
 			return $items;
 		}
-		$order = count( $items );
 		$extra = self::items();
-		foreach ( $extra as $item ) {
-			$item->menu_order = ++$order;
+		if ( ! $extra ) {
+			return $items;
 		}
-		return array_merge( $items, $extra );
+
+		// Regions go right after the top-level link to the tours archive ("All
+		// Tours"); without one, at the end. The walker renders top-level items
+		// in array order.
+		$items    = array_values( $items );
+		$position = count( $items );
+		$archive  = untrailingslashit( (string) get_post_type_archive_link( 'viator_tour' ) );
+		foreach ( $items as $i => $item ) {
+			if ( empty( $item->menu_item_parent ) && '' !== $archive && untrailingslashit( (string) $item->url ) === $archive ) {
+				$position = $i + 1;
+				break;
+			}
+		}
+		array_splice( $items, $position, 0, $extra );
+
+		foreach ( $items as $i => $item ) {
+			$item->menu_order = $i + 1;
+		}
+		return $items;
 	}
 
 	/**