Add CLAUDE.md documentation and sync WordPress core files - Add comprehensive CLAUDE.md documentation file with project architecture, development setup, database operations, WordPress CLI usage, file sync procedures, and Mercurial commands - Update WordPress core files from wordpress/ to wp/ directory - Sync latest WordPress admin interface, includes, and core functionality - Update plugins: portfolio plugin with latest BWS framework and fancybox integration - Maintain custom configuration and theme files 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>

<?php
/**
 * WordPress Options Header.
 *
 * Displays updated message, if updated variable is part of the URL query.
 *
 * @package WordPress
 * @subpackage Administration
 */

$action = ! empty( $_REQUEST['action'] ) ? sanitize_text_field( $_REQUEST['action'] ) : '';

if ( isset( $_GET['updated'] ) && isset( $_GET['page'] ) ) {
	// For back-compat with plugins that don't use the Settings API and just set updated=1 in the redirect.
	add_settings_error( 'general', 'settings_updated', __( 'Settings saved.' ), 'success' );
}

settings_errors();